ORIGINAL PATENT APPLICATION NUMBER 13,231 FOR A DOOR LOCK WITH CATCH RELEASABLE AFTER THE INSERTION OF A COIN TO ENABLE THE DOOR TO BE OPENED FOR ENTRANCE, THE COIN BEING DISCHARGED ON RE-OPENING THE DOOR FOR EXIT (SURREY).

Cambridge Rare Books

ISBN:

Title: ORIGINAL PATENT APPLICATION NUMBER 13,231 FOR A DOOR LOCK WITH CATCH RELEASABLE AFTER THE INSERTION OF A COIN TO ENABLE THE DOOR TO BE OPENED FOR ENTRANCE, THE COIN BEING DISCHARGED ON RE-OPENING THE DOOR FOR EXIT (SURREY).

Authors: Simpson, William Speirs.

Binding: Hardback

Publisher: HMSO

Publish Date: 1886

Condition: ACCEPTABLE

SKU: 1132834

Details: 1886. HMSO. First. Disbound loose sheets with clear protective covers. 7.5x11. Complete specification for patent application together with drawings.