Robert W. Mitchell

Follow

Person

St. Joseph, MI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Photographic print processing system
- Patent number 4,188,107
- Issue date Feb 12, 1980
- Robert W. Mitchell
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color filter head for photographic enlargers
- Patent number 3,982,825
- Issue date Sep 28, 1976
- Photo Systems, Inc.
- Robert W. Mitchell
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Picture frame construction
- Patent number 3,952,437
- Issue date Apr 27, 1976
- Photo Systems, Inc.
- Robert W. Mitchell
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Focusing device and method of use thereof for photographic enlarger
- Patent number 3,944,363
- Issue date Mar 16, 1976
- Photo Systems, Inc.
- Robert W. Mitchell
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY