Inventor · disambiguated record
Everett D. Hougen
Also filed as: HOUGEN EVERETT D · HOUGEN EVERETT DOUGLAS
24 granted patents·1,429 citations·filing 1975–1999
97Inventor score
Files withHOUGEN EVERETT D18
Top patents by PatentIndex Score
24 records- 0194US5899832ACompact lung exercising deviceFiled 1997·Granted May 4, 1999·175 cites·8 claims
- 0293US5910071APortable, personal breathing apparatusFiled 1997·Granted Jun 8, 1999·123 cites·11 claims
- 0393US4452554AAnnular hole cutterHOUGEN EVERETT D·Filed 1983·Granted Jun 5, 1984·60 cites·10 claims
- 0492US4261673AMagnetic base drillHOUGEN EVERETT D·Filed 1979·Granted Apr 14, 1981·55 cites·43 claims
- 0585US6083141APortable respiratory exercise apparatus and method for using the sameFiled 1997·Granted Jul 4, 2000·215 cites·22 claims
- 0685US4322187AAnnular hole cutterHOUGEN EVERETT D·Filed 1980·Granted Mar 30, 1982·39 cites·11 claims
- 0784US3969036AMagnetic drillHOUGEN EVERETT D·Filed 1975·Granted Jul 13, 1976·35 cites·9 claims
- 0883US5094573AMultidirectional cutting toolHOUGEN EVERETT D·Filed 1988·Granted Mar 10, 1992·52 cites·58 claims
- 0981US4322188AAnnular hole cutterHOUGEN EVERETT D·Filed 1980·Granted Mar 30, 1982·33 cites·7 claims
- 1079US5890998APortable personal breathing apparatusFiled 1998·Granted Apr 6, 1999·178 cites·39 claims
- 1175US4538944AAnnular cutterHOUGEN EVERETT D·Filed 1983·Granted Sep 3, 1985·27 cites·9 claims
- 1272US4871287AAnnular cutter having radial clearanceHOUGEN EVERETT D·Filed 1988·Granted Oct 3, 1989·26 cites·25 claims
- 1371US6500095B1Portable personal breathing apparatus and method for exercising the lungsFiled 1999·Granted Dec 31, 2002·113 cites·13 claims
- 1470US4632610AAnnular hole cutterHOUGEN EVERETT D·Filed 1985·Granted Dec 30, 1986·23 cites·46 claims
- 1569US4813819AMethod for cutting holesHOUGEN EVERETT D·Filed 1988·Granted Mar 21, 1989·22 cites·12 claims
- 1669US4204783AMachine for cutting holes with annular cuttersHOUGEN EVERETT D·Filed 1979·Granted May 27, 1980·17 cites·32 claims
- 1769US4193721AArbor for annular hole cutterHOUGEN EVERETT D·Filed 1979·Granted Mar 18, 1980·19 cites·19 claims
- 1869US4047827AAccessory support plates for a magnet base drillHOUGEN EVERETT D·Filed 1976·Granted Sep 13, 1977·19 cites·12 claims
- 1968US5658221APortable personal breathing apparatus and method of using sameFiled 1995·Granted Aug 19, 1997·108 cites·18 claims
- 2067US4514120AChip breaker for annular hole cutting toolsHOUGEN EVERETT D·Filed 1982·Granted Apr 30, 1985·21 cites·10 claims
- 2163US4952102AAnnular hole cutterHOUGEN EVERETT D·Filed 1989·Granted Aug 28, 1990·17 cites·19 claims
- 2262US4557641AAnnular cutterHOUGEN EVERETT D·Filed 1983·Granted Dec 10, 1985·17 cites·9 claims
- 2360US5145296AApparatus and method for cutting holesHOUGEN EVERETT D·Filed 1990·Granted Sep 8, 1992·22 cites·11 claims
- 2458US4131384AArbor for annular hole cutterHOUGEN EVERETT D·Filed 1977·Granted Dec 26, 1978·13 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →