Forum: Patent & Propriety Locks
Moderator: awaiting/TBA | Post in this forum locks that demonstrate a Patent, or a Security Feature or even a Brand Name or Logo. You will find here Locks for: Doors, Furniture, Safes, Vaults, including: Combination Locks for Safes, Key Locks for Safes, Time Locks & Bolt Motors, Unit Locks, etc.
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Here's two more locks that came from two different doors in the Sheffield area. Both buildings were owned by the same owner. 10/67 643 and 11/64 628 Both in a private UK collection.
Hobbs Parautoptic lock