Hugo Wehrenfennig: Difference between revisions
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*1951 JAN 18 - BAYONET UNION FOR CAMERA OBJECTIVE PARTS | *1951 JAN 18 - BAYONET UNION FOR CAMERA OBJECTIVE PARTS | ||
*1951 APR 17 - CAMERA WINDING KEY with [[Ludwig Leitz]] |
Revision as of 19:16, 1 March 2012
US Patent 2,643,581.
E. Leitz Photographic Patents by Hugo Wehrenfennig
- 1951 JAN 18 - BAYONET UNION FOR CAMERA OBJECTIVE PARTS
- 1951 APR 17 - CAMERA WINDING KEY with Ludwig Leitz