Inventor · disambiguated record
Donald L. Van Zeeland
Also filed as: VAN ZEELAND DONALD L
12 granted patents·240 citations·filing 1973–1989
92Inventor score
Top patents by PatentIndex Score
12 records- 0191US4301508ADigital processing system for time-of-day and demand meter displayEATON CORP·Filed 1979·Granted Nov 17, 1981·66 cites·12 claims
- 0284US4937460AThickness sensorEATON CORP·Filed 1989·Granted Jun 26, 1990·43 cites·19 claims
- 0381US4543527AProximity switch exhibiting improved start-up characteristicsEATON CORP·Filed 1982·Granted Sep 24, 1985·38 cites·15 claims
- 0480US4216515AGround fault interrupterEATON CORP·Filed 1973·Granted Aug 5, 1980·25 cites·10 claims
- 0568US4482818AUniversal field convertible 3-wire switchEATON CORP·Filed 1982·Granted Nov 13, 1984·15 cites·39 claims
- 0666US5034621AInductive proximity switch exhibiting magnetic field immunityEATON CORP·Filed 1987·Granted Jul 23, 1991·17 cites·18 claims
- 0763US4199694ATerminal convertible alternating current switchEATON CORP·Filed 1978·Granted Apr 22, 1980·10 cites·9 claims
- 0854US4626683AThrough-beam optical detector system with alignment aidEATON CORP·Filed 1982·Granted Dec 2, 1986·12 cites·1 claims
- 0952US4329730AD.C. Switch circuitEATON CORP·Filed 1980·Granted May 11, 1982·8 cites·16 claims
- 1047US4079267AModular IC on-delay timerCUTLER HAMMER INC·Filed 1976·Granted Mar 14, 1978·5 cites·15 claims
- 1129US4904941AGauge for detecting misalignmentEATON CORP·Filed 1987·Granted Feb 27, 1990·0 cites·17 claims
- 1229US4891589ADisplacement gauge that combines vector signalsEATON CORP·Filed 1989·Granted Jan 2, 1990·1 cites·7 claims
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