DISRAELI DOCUMENTS

French Registered Design # 21007-001

French Registered Design 21007-001 - Boeuf main image

I know nothing about this. Marcel Boeuf also patented a straight-forward looking twin pulley derailleur in 1927, but I have never seen or heard anything else about him or is mechanisms.


French Registered Design 21007-001 - Boeuf main image
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