Talk:Hugo Wehrenfennig: Difference between revisions
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m (New page: patent: - No. 2,643,581 patented June 30, 1953 by US Patent Office, entitled "Bayonet union for objective parts" by Hugo Wehrenfennig (Wetzlar), assignor to Ernst Leitz G.m.b.H) |
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Latest revision as of 16:52, 1 March 2009
patent:
- No. 2,643,581 patented June 30, 1953 by US Patent Office, entitled "Bayonet union for objective parts" by Hugo Wehrenfennig (Wetzlar), assignor to Ernst Leitz G.m.b.H
