Inventor · disambiguated record
Willis R. Campbell
Also filed as: CAMPBELL WILLIS R · DIEDERICH ANTHONY F JR · WALDROP T WILLIAM
54 granted patents·836 citations·filing 1974–2001
99Inventor score
Files withSPERRY CORP26SPERRY RAND CORP10SEPARATION OIL SERVICES INC4CAMPBELL WILLIS R2TERZINI ROBERT2
Top patents by PatentIndex Score
54 records- 0192US4510861AContinuous roll baling machineSPERRY CORP·Filed 1983·Granted Apr 16, 1985·46 cites·12 claims
- 0292US4411127AFloating windguardSPERRY CORP·Filed 1982·Granted Oct 25, 1983·52 cites·8 claims
- 0388US6945484B1Method and apparatus for processing municipal wasteTERZINI ROBERT·Filed 2001·Granted Sep 20, 2005·27 cites·20 claims
- 0488US4167844AAutomatic twine wrapping apparatusSPERRY RAND CORP·Filed 1978·Granted Sep 18, 1979·33 cites·11 claims
- 0587US6467708B1Method of processing municipal wasteTERZINI ROBERT·Filed 2001·Granted Oct 22, 2002·25 cites·18 claims
- 0685USD288593SSolar collectorCAMPBELL WILLIS R·Filed 1984·Granted Mar 3, 1987·21 cites·1 claims
- 0785US4264252ABale handling meansSPERRY CORP·Filed 1978·Granted Apr 28, 1981·34 cites·9 claims
- 0885US4206587ADischarge meansSPERRY CORP·Filed 1979·Granted Jun 10, 1980·27 cites·19 claims
- 0984US6398138B1Method of extracting nylon fiber from a comminuterFiled 2000·Granted Jun 4, 2002·30 cites·8 claims
- 1077US5423340AApparatus for removing an oil spill on a body of waterSEPARATION OIL SERVICES INC·Filed 1994·Granted Jun 13, 1995·37 cites·4 claims
- 1174US6412716B1Method and apparatus for processing municipal sludge wasteFiled 2000·Granted Jul 2, 2002·17 cites·18 claims
- 1274US4436027AStripper bar for roll baling machineSPERRY CORP·Filed 1982·Granted Mar 13, 1984·20 cites·5 claims
- 1370US4208862AAutomatic bale ejection driveSPERRY CORP·Filed 1979·Granted Jun 24, 1980·17 cites·28 claims
- 1469US5316029AOil separatorSEPARATION OIL SERVICES INC·Filed 1992·Granted May 31, 1994·29 cites·11 claims
- 1569US3952895ALarge round bale handling apparatusSPERRY RAND CORP·Filed 1974·Granted Apr 27, 1976·19 cites·8 claims
- 1667US5727740AMethod and apparatus for recovering fractional components of soilFiled 1996·Granted Mar 17, 1998·27 cites·20 claims
- 1766US6126096AMethod and apparatus for separating and recovering fractional components of carpetFiled 1999·Granted Oct 3, 2000·26 cites·18 claims
- 1863US4406221ABale retainer for roll baling machineSPERRY CORP·Filed 1982·Granted Sep 27, 1983·14 cites·11 claims
- 1963US4158331ACenter pivot dispensing apparatusSPERRY RAND CORP·Filed 1978·Granted Jun 19, 1979·15 cites·15 claims
- 2062US5419253ARound bale wrapping method including wrapping with self-adhering tapeNEW HOLLAND NORTH AMERICA INC·Filed 1994·Granted May 30, 1995·31 cites·10 claims
- 2161US5908164AMethod and apparatus for separating and recovering fractional components of carpetFiled 1998·Granted Jun 1, 1999·19 cites·20 claims
- 2261US4370848ABaling machine with tapered bale chamberSPERRY CORP·Filed 1981·Granted Feb 1, 1983·13 cites·13 claims
- 2360US5365836AApparatus for wrapping round balesFORD NEW HOLLAND INC·Filed 1994·Granted Nov 22, 1994·27 cites·16 claims
- 2459US4072095ATwine wrapping mechanism for a roll forming machineSPERRY RAND CORP·Filed 1976·Granted Feb 7, 1978·13 cites·9 claims
- 2558US4517890ATwine wrapping apparatus for a roll baling machineSPERRY CORP·Filed 1984·Granted May 21, 1985·12 cites·16 claims
- 2657US4513731ASolar heat collectorCAMPBELL WILLIS R·Filed 1982·Granted Apr 30, 1985·17 cites·20 claims
- 2756US4426833ABaling machine with air spring means for maintaining apron tensionSPERRY CORP·Filed 1981·Granted Jan 24, 1984·11 cites·14 claims
- 2856US4143505ACollection and recycling apparatus for crop material particles in a roll forming machineSPERRY RAND CORP·Filed 1977·Granted Mar 13, 1979·12 cites·12 claims
- 2955US3951288ALarge round bale handling apparatusSPERRY RAND CORP·Filed 1974·Granted Apr 20, 1976·14 cites·9 claims
- 3053US4062279ATwine wrapping mechanism for a roll forming machineSPERRY RAND CORP·Filed 1976·Granted Dec 13, 1977·13 cites·7 claims
- 3150US5637152ASoil washing apparatus and methodSEPARATION OIL SERVICES INC·Filed 1995·Granted Jun 10, 1997·15 cites·19 claims
- 3250US4343141ABaling machine with improved arm assembly for controlling expansion of the upper apronSPERRY CORP·Filed 1981·Granted Aug 10, 1982·11 cites·6 claims
- 3350US4296596AAutomatic bale ejection driveSPERRY CORP·Filed 1980·Granted Oct 27, 1981·10 cites·6 claims
- 3449US4434607AOverfill protection apparatus for roll baling machineSPERRY CORP·Filed 1982·Granted Mar 6, 1984·9 cites·17 claims
- 3548US6464155B1Method of processing animal waste and partsFiled 2000·Granted Oct 15, 2002·1 cites·19 claims
- 3644US5931089ABale starting chamber with tensioning deviceGEHL CO·Filed 1997·Granted Aug 3, 1999·12 cites·24 claims
- 3744US4505197ATwine cut and clamp mechanism for a roll baling machineSPERRY CORP·Filed 1984·Granted Mar 19, 1985·7 cites·5 claims
- 3844US4253389ABreakaway reset mechanismSPERRY CORP·Filed 1980·Granted Mar 3, 1981·9 cites·25 claims
- 3943US4424662ADrive apparatus for roll baling machineSPERRY CORP·Filed 1982·Granted Jan 10, 1984·7 cites·5 claims
- 4040US5611363AOil spill cleanerSEPARATION OIL SERVICES INC·Filed 1996·Granted Mar 18, 1997·9 cites·2 claims
- 4140US3966063ALarge round bale handling apparatusSPERRY RAND CORP·Filed 1974·Granted Jun 29, 1976·6 cites·6 claims
- 4237US4584827ADrive mechanism for roll balerSPERRY CORP·Filed 1985·Granted Apr 29, 1986·9 cites·4 claims
- 4337US4417436AMethod of adjusting apron tension in roll baling machinesSPERRY CORP·Filed 1982·Granted Nov 29, 1983·4 cites·3 claims
- 4437US3934393ABreakaway mechanism for an improved crop material roll forming machineSPERRY RAND CORP·Filed 1974·Granted Jan 27, 1976·5 cites·6 claims
- 4535US4597248AMethod of operating a roll balerSPERRY CORP·Filed 1985·Granted Jul 1, 1986·7 cites·3 claims
- 4634US4508359AAutomatic latch for draft member of bale handlerSPERRY CORP·Filed 1983·Granted Apr 2, 1985·6 cites·11 claims
- 4733US5419241ATape dispensing apparatus for round balersFiled 1994·Granted May 30, 1995·2 cites·9 claims
- 4833US4422374ABaling machine with air spring means for maintaining apron tensionSPERRY CORP·Filed 1981·Granted Dec 27, 1983·3 cites·3 claims
- 4932US4517889ATwine cutting and clamping apparatus for a roll baling machineSPERRY CORP·Filed 1984·Granted May 21, 1985·1 cites·5 claims
- 5031US4159615ACollection and recycling apparatus for crop material particles in a roll forming machineSPERRY RAND CORP·Filed 1977·Granted Jul 3, 1979·3 cites·11 claims
Showing the top 50 of 54 patent records by PatentIndex Score.
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