UK Patent # 620,708 - Boeris scan 1

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UK Patent # 620,708 - Boeris
scan 1 of 7

Publisher: UK Intellectual Property Office
Document: UK Patent # 620,708 - Boeris
Date: priority date August 1946 although the relevant Italian patent may date from August 1945
Derailleur brands: Boeris
Derailleurs: Boeris

UK Patent 620,708 - Boeris scan 1 main image