John Ernest Ralph

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Salfords, near Redhill, EN

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Patents Grantslast 30 patents

Information Patent Grant
JFET optical sensor with capacitively charged buried floating gate
- Patent number 3,947,707
- Issue date Mar 30, 1976
- U.S. Philips Corporation
- John Martin Shannon
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electron tube including a photocathode
- Patent number 3,931,633
- Issue date Jan 6, 1976
- U.S. Philips Corporation
- John Martin Shannon
- H01 - BASIC ELECTRIC ELEMENTS