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DISRAELI
DOCUMENTS
US Patent # 2,564,576
scan 3 of 3
Publisher:
US Patent and Trademark Office
Document:
US Patent # 2,564,576 - Simplex
Date: US application filed March 1947, French application filed September
1945
Derailleur brands:
Simplex
Derailleurs:
Simplex pull-chain designs
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