Robert F. Nepper

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St. Paul, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Continuous copier
- Patent number 4,523,836
- Issue date Jun 18, 1985
- Minnesota Mining and Manufacturing Company
- Robert F. Nepper
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Control circuitry for a continuous copy machine
- Patent number 4,494,860
- Issue date Jan 22, 1985
- Minnesota Mining and Manufacturing Company
- Robert F. Nepper
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developer material level sensor
- Patent number 4,292,530
- Issue date Sep 29, 1981
- Minnesota Mining and Manufacturing Company
- Robert F. Nepper
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color printing method
- Patent number 4,008,962
- Issue date Feb 22, 1977
- Minnesota Mining and Manufacturing Company
- Robert F. Nepper
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY