Forum: HoL Archive
Browse our Library: Company history, Product information, Data sheets, Operating instructions for vintage/antique (pre WWII) security products & Press Cuttings - For Reference, Research and Discussion.
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Another point Gary is that although the key is marked 'patent' nothing has been found in the British patent abridgements, so maybe its one that was 'applied for' but not granted... The mystery...
Show & Tell Meeting in the...