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DISRAELI
DOCUMENTS
US Patent # 2,839,939
scan 9 of 9
Publisher:
US Patent and Trademark Office
Document:
US Patent # 2,839,939 - Simplex
Date: US application filed June 1955, French application filed June
1954
Derailleur brands:
Simplex
Derailleurs: Simplex Juy 543
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