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DISRAELI
DOCUMENTS
US Patent # 2,598,557
scan 1 of 3
Publisher:
US Patent and Trademark Office
Document:
US Patent # 2,598,557 - Simplex
Date: US application filed June 1947, French application filed March
1944
Derailleur brands:
Simplex
Derailleurs: Simplex Champion du Monde 46
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