Stephen D. Bull

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Ripley, GB

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Patents Grantslast 30 patents

Information Patent Grant
Display device
- Patent number 5,189,406
- Issue date Feb 23, 1993
- THORN EMI plc
- Brian J. Humphries
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Display device
- Patent number 5,093,652
- Issue date Mar 3, 1992
- THORN EMI plc
- Stephen D. Bull
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS