Roy S. Jefferies

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Bridgnorth, GB

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Patents Grantslast 30 patents

Information Patent Grant
Lock and method of securing and releasing a member
- Patent number 4,916,927
- Issue date Apr 17, 1990
- John O'Connell
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Security device and method
- Patent number 4,854,146
- Issue date Aug 8, 1989
- Lowe and Fletcher Limited
- John O'Connell
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Information carrier and reader
- Patent number 4,810,861
- Issue date Mar 7, 1989
- Lowe and Fletcher Limited
- Victor L. Herriott
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Method of operating a security device, security device and data car...
- Patent number 4,791,280
- Issue date Dec 13, 1988
- Lowe and Fletcher Limited
- John O'Connell
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES