Gordon Helwig

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Toronto, CA

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Patents Grantslast 30 patents

Information Patent Grant
Display element write sensor
- Patent number 4,156,872
- Issue date May 29, 1979
- Ferranti-Packard Limited
- Gordon Helwig
- G08 - SIGNALLING
Information Patent Grant
Gravity bias for display elements
- Patent number 3,991,496
- Issue date Nov 16, 1976
- Ferranti-Packard Limited
- Gordon Helwig
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS