Ralph M. Mitchell

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Elgin, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Battery charger apparatus and method with multiple range current co...
- Patent number 5,554,921
- Issue date Sep 10, 1996
- Motorola, Inc.
- Edward Li
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electric motor control with integral battery charger
- Patent number 5,500,579
- Issue date Mar 19, 1996
- Motorola, Inc.
- Sang H. Kim
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Drive and protection system for variable speed motor
- Patent number 4,780,656
- Issue date Oct 25, 1988
- Motorola, Inc.
- Ralph M. Mitchell
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER