Roger M. Johnson

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Brooklyn Center, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Camera with negative identification system
- Patent number 5,812,895
- Issue date Sep 22, 1998
- Photo Control Corp
- Dale R. DuVall
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Synchronized zoom electronic camera system
- Patent number 5,329,325
- Issue date Jul 12, 1994
- Photo-Control Corporation
- Larry D. McClellan
- G02 - OPTICS
Information Patent Grant
Identification system for automated film and order processing inclu...
- Patent number 5,294,950
- Issue date Mar 15, 1994
- Photo-Control Corporation
- Dale R. DuVall
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY