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Barry F. Dowden
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Romsey, GB
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last 30 patents
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Patent Grant
Hermetic electro-optic display cell
Patent number
4,575,190
Issue date
Mar 11, 1986
International Business Machines Corporation
John C. Wood
G02 - OPTICS
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Patent Grant
Method and electrolytic display for selectively displaying an image
Patent number
4,526,441
Issue date
Jul 2, 1985
International Business Machines Corporation
Barry F. Dowden
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS