John B. Wheatcroft

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Chesterfield, GB

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing photographic solutions containing hydroquinon...
- Patent number 4,366,234
- Issue date Dec 28, 1982
- Staveley Chemicals Limited
- John B. Wheatcroft
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY