Douglas F. Mitchell

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Brooklyn, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Lithographic plate making and printing process
- Patent number 4,149,464
- Issue date Apr 17, 1979
- Rapoport Printing Corporation
- Sidney L. Rapoport
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Color lithography using a random pattern screen
- Patent number 4,037,533
- Issue date Jul 26, 1977
- Rapoport Printing Corporation
- Sidney L. Rapoport
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Lithographic printing process
- Patent number 4,011,085
- Issue date Mar 8, 1977
- Rapoport Printing Corporation
- Sidney L. Rapoport
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS