David H. Kirkman

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Winchester, GB

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Patents Grantslast 30 patents

Information Patent Grant
Liquid filled electro-optic display cell with diaphragm seal
- Patent number 4,545,650
- Issue date Oct 8, 1985
- International Business Machines Corporation
- David H. Kirkman
- G02 - OPTICS
Information 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
Information Patent Grant
Passive display module and system
- Patent number 4,436,378
- Issue date Mar 13, 1984
- International Business Machines Corporation
- David H. Kirkman
- G02 - OPTICS