Richard P. Hayes-Pankhurst

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London, GB

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Patents Grantslast 30 patents

Information Patent Grant
Switches and keyboards
- Patent number 4,839,474
- Issue date Jun 13, 1989
- Key Innovations Limited
- Richard P. Hayes-Pankhurst
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Switches and keyboards
- Patent number 4,634,818
- Issue date Jan 6, 1987
- NPM International
- Richard P. Hayes-Pankhurst
- H01 - BASIC ELECTRIC ELEMENTS