John L. Hall

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Maidenhead, GB

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Patents Grantslast 30 patents

Information Patent Grant
Control mechanism for pneumatic apparatus
- Patent number 4,476,678
- Issue date Oct 16, 1984
- PLC Peters Limited
- John L. Hall
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Panic bolt assembly
- Patent number 4,312,528
- Issue date Jan 26, 1982
- PLC Engineering Company Limited
- John L. Hall
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES