Richard J. Graefe

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Milwaukee, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Electronic delay timer
- Patent number 4,714,977
- Issue date Dec 22, 1987
- Square D Company
- John S. Hoelzer
- G04 - HOROLOGY
Information Patent Grant
Reduced voltage starter with voltage ramp control
- Patent number 4,634,951
- Issue date Jan 6, 1987
- Square D Company
- Julian C. Kampf
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Solid state over-current protective apparatus for a power circuit
- Patent number 4,345,288
- Issue date Aug 17, 1982
- Square D Company
- Julian C. Kampf
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER