John G. Long

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Epsom, GB

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Patents Grantslast 30 patents

Information Patent Grant
Photographic exposure masks
- Patent number 4,479,713
- Issue date Oct 30, 1984
- Durst (U.K.) Limited
- John G. Long
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photographic exposure masks
- Patent number 4,400,084
- Issue date Aug 23, 1983
- Durst (U.K.) Limited
- John G. Long
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photographic printing or enlarging apparatus
- Patent number 4,239,382
- Issue date Dec 16, 1980
- Durst (UK) Ltd.
- Keith Aston
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photographic processing apparatus with variable sized tanks lined w...
- Patent number 4,197,001
- Issue date Apr 8, 1980
- Durst (UK) Ltd.
- John G. Long
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Illumination system for a photographic copying apparatus
- Patent number 4,132,478
- Issue date Jan 2, 1979
- Durst (U.K.) Limited
- John G. Long
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY