Inventor · disambiguated record
Lawrence F. Irwin
Also filed as: IRWIN LAWRENCE · IRWIN LAWRENCE F
35 granted patents·1,231 citations·filing 1974–2007
98Inventor score
Top patents by PatentIndex Score
35 records- 0196US5862561AWaste line inspection and clean out device with water jet headFiled 1997·Granted Jan 26, 1999·78 cites·17 claims
- 0295US6135466ATransport dolly for lifting and transporting lavatory fixturesFiled 1997·Granted Oct 24, 2000·106 cites·4 claims
- 0395US4580306AWaste line cleanout apparatusLAWRENCE IRWIN F·Filed 1984·Granted Apr 8, 1986·65 cites·8 claims
- 0492US4816957AGround line fault interrupter adapter unitLAWRENCE IRWIN F·Filed 1987·Granted Mar 28, 1989·82 cites·6 claims
- 0588US4686732AWaste line cleanout apparatusLAWRENCE IRWIN F·Filed 1986·Granted Aug 18, 1987·46 cites·8 claims
- 0687US4870992ABackflow prevention deviceAUGERSCOPE INC·Filed 1987·Granted Oct 3, 1989·63 cites·4 claims
- 0787US4364140APipe cleanout toolLAWRENCE IRWIN F·Filed 1981·Granted Dec 21, 1982·54 cites·10 claims
- 0886US5996159AWaste line inspection and clean out device with water jet headFiled 1999·Granted Dec 7, 1999·59 cites·15 claims
- 0986US4285126AHydraulically actuated apparatusLAWRENCE IRWIN F·Filed 1979·Granted Aug 25, 1981·27 cites·9 claims
- 1085US4395791ASpring feeding mechanismLAWRENCE IRWIN F·Filed 1981·Granted Aug 2, 1983·49 cites·14 claims
- 1184US5193242AWasteline cleanout apparatusLAWRENCE IRWIN F·Filed 1991·Granted Mar 16, 1993·48 cites·9 claims
- 1284US4508468ALocking couplingLAWRENCE IRWIN F·Filed 1982·Granted Apr 2, 1985·40 cites·2 claims
- 1384US4153966ASpring feed deviceLAWRENCE IRWIN F·Filed 1978·Granted May 15, 1979·41 cites·15 claims
- 1483US7761948B2Waste line inspection and clean-out toolIRWIN LAWRENCE F·Filed 2007·Granted Jul 27, 2010·10 cites·12 claims
- 1580US3958293APipe cleaning machineAUGERSCOPE INC·Filed 1974·Granted May 25, 1976·33 cites·7 claims
- 1679US4611360APipe cleaning machineLAWRENCE IRWIN F·Filed 1984·Granted Sep 16, 1986·30 cites·7 claims
- 1778US5933903AWaste line clean out device with water jet headFiled 1997·Granted Aug 10, 1999·32 cites·15 claims
- 1878US4716613APipe cleaning machineLAWRENCE IRWIN F·Filed 1986·Granted Jan 5, 1988·31 cites·6 claims
- 1975US3950934APlumbers snakeAUGERSCOPE INC·Filed 1975·Granted Apr 20, 1976·30 cites·8 claims
- 2072US4496811AFoot switch safety enclosureLAWRENCE IRWIN F·Filed 1983·Granted Jan 29, 1985·15 cites·6 claims
- 2170US6142460AMethod and apparatus for installing and removing a sink mounted garbage disposerFiled 1998·Granted Nov 7, 2000·28 cites·12 claims
- 2270US5239708APneumatic waste line clean-out toolLAWRENCE IRWIN F·Filed 1992·Granted Aug 31, 1993·36 cites·18 claims
- 2369US5265301ADrain cleaning apparatusLAWRENCE IRWIN F·Filed 1992·Granted Nov 30, 1993·35 cites·15 claims
- 2467US6076219AWaste line clean out apparatusFiled 1999·Granted Jun 20, 2000·34 cites·20 claims
- 2567US5414888AGrip handle chuckAUGERSCOPE INC·Filed 1994·Granted May 16, 1995·25 cites·9 claims
- 2667USD298071SSewer cleanout apparatusAUGERSCOPE INC·Filed 1985·Granted Oct 11, 1988·11 cites·1 claims
- 2766US4361924AGrip handle chuckLAWRENCE IRWIN F·Filed 1981·Granted Dec 7, 1982·20 cites·7 claims
- 2858US4335632AInternal pipe wrenchAUGERSCOPE INC·Filed 1980·Granted Jun 22, 1982·16 cites·7 claims
- 2955US5497516ADrain sealing apparatusAUGERSCOPE INC·Filed 1994·Granted Mar 12, 1996·22 cites·2 claims
- 3055US4542543AImpact deviceLAWRENCE IRWIN F·Filed 1984·Granted Sep 24, 1985·17 cites·11 claims
- 3142US4452108ARatcheting pipe wrenchLAWRENCE IRWIN F·Filed 1980·Granted Jun 5, 1984·9 cites·6 claims
- 3240US4694634AVacuum sealing device for insulated steam injection tubingBABCOCK & WILCOX CO·Filed 1985·Granted Sep 22, 1987·8 cites·8 claims
- 3338US5004119ADrain sealing apparatusAUGERSCOPE INC·Filed 1989·Granted Apr 2, 1991·8 cites·10 claims
- 3432US4942873AResuscitation deviceLAWRENCE IRWIN F·Filed 1988·Granted Jul 24, 1990·18 cites·7 claims
- 3531US4679378AVacuum sealing device for insulated steam injection tubingBABCOCK & WILCOX CO·Filed 1986·Granted Jul 14, 1987·5 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →