Individual holder
LAWRENCE IRWIN F
US·18 granted patents·663 citations·filing 1978–1992
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
18 records- 0195US4580306AWaste line cleanout apparatusLAWRENCE IRWIN F·Filed 1984·Granted Apr 8, 1986·65 cites·8 claims
- 0292US4816957AGround line fault interrupter adapter unitLAWRENCE IRWIN F·Filed 1987·Granted Mar 28, 1989·82 cites·6 claims
- 0388US4686732AWaste line cleanout apparatusLAWRENCE IRWIN F·Filed 1986·Granted Aug 18, 1987·46 cites·8 claims
- 0487US4364140APipe cleanout toolLAWRENCE IRWIN F·Filed 1981·Granted Dec 21, 1982·54 cites·10 claims
- 0586US4285126AHydraulically actuated apparatusLAWRENCE IRWIN F·Filed 1979·Granted Aug 25, 1981·27 cites·9 claims
- 0685US4395791ASpring feeding mechanismLAWRENCE IRWIN F·Filed 1981·Granted Aug 2, 1983·49 cites·14 claims
- 0784US5193242AWasteline cleanout apparatusLAWRENCE IRWIN F·Filed 1991·Granted Mar 16, 1993·48 cites·9 claims
- 0884US4508468ALocking couplingLAWRENCE IRWIN F·Filed 1982·Granted Apr 2, 1985·40 cites·2 claims
- 0984US4153966ASpring feed deviceLAWRENCE IRWIN F·Filed 1978·Granted May 15, 1979·41 cites·15 claims
- 1079US4611360APipe cleaning machineLAWRENCE IRWIN F·Filed 1984·Granted Sep 16, 1986·30 cites·7 claims
- 1178US4716613APipe cleaning machineLAWRENCE IRWIN F·Filed 1986·Granted Jan 5, 1988·31 cites·6 claims
- 1272US4496811AFoot switch safety enclosureLAWRENCE IRWIN F·Filed 1983·Granted Jan 29, 1985·15 cites·6 claims
- 1370US5239708APneumatic waste line clean-out toolLAWRENCE IRWIN F·Filed 1992·Granted Aug 31, 1993·36 cites·18 claims
- 1469US5265301ADrain cleaning apparatusLAWRENCE IRWIN F·Filed 1992·Granted Nov 30, 1993·35 cites·15 claims
- 1566US4361924AGrip handle chuckLAWRENCE IRWIN F·Filed 1981·Granted Dec 7, 1982·20 cites·7 claims
- 1655US4542543AImpact deviceLAWRENCE IRWIN F·Filed 1984·Granted Sep 24, 1985·17 cites·11 claims
- 1742US4452108ARatcheting pipe wrenchLAWRENCE IRWIN F·Filed 1980·Granted Jun 5, 1984·9 cites·6 claims
- 1832US4942873AResuscitation deviceLAWRENCE IRWIN F·Filed 1988·Granted Jul 24, 1990·18 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →