Inventor · disambiguated record
Earl A. Grindheim
Also filed as: GRINDHEIM EARL A
5 granted patents·67 citations·filing 1974–1981
81Inventor score
Top patents by PatentIndex Score
5 records- 0171US4153873ATransducer for converting a varying analog current signal to a binary digital signalROSEMOUNT INC·Filed 1977·Granted May 8, 1979·21 cites·14 claims
- 0263US4381677AReactance measurement circuitROSEMOUNT INC·Filed 1981·Granted May 3, 1983·18 cites·33 claims
- 0357US4391146AParallel T impedance measurement circuit for use with variable impedance sensorROSEMOUNT INC·Filed 1981·Granted Jul 5, 1983·13 cites·34 claims
- 0454US4016763ATwo wire current transmitter responsive to a resistive temperature sensor input signalROSEMOUNT INC·Filed 1974·Granted Apr 12, 1977·10 cites·11 claims
- 0539USRE30597ETwo wire current transmitter responsive to a resistive temperature sensor input signalROSEMOUNT ENG CO LTD·Filed 1978·Granted May 5, 1981·5 cites·12 claims
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