Norman R. Dittmar

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Rochester, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Pendulum position detector
- Patent number 4,979,387
- Issue date Dec 25, 1990
- Norman R. Dittmar
- G04 - HOROLOGY
Information Patent Grant
Selectable direct current power supply
- Patent number 4,724,375
- Issue date Feb 9, 1988
- Norman R. Dittmar
- G05 - CONTROLLING REGULATING
Information Patent Grant
Device for detecting metallic ticking sounds
- Patent number 4,665,735
- Issue date May 19, 1987
- Norman R. Dittmar
- G04 - HOROLOGY