Walter Mandler
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E. Leitz Photographic Patents by Walter Mandler of Midland, Canada
- 1958 SEP 30 - PHOTOGRAPHIC OBJECTIVE (8 / 6)
- 1959 AUG 26 - HIGH APERTURE PHOTOGRAPHIC OBJECTIVE (7 / 5) with Erich Wagner
- 1960 JUL 26 - HIGH APERTURE OBJECTIVE FOR PHOTOGRAPHY AND PROJECTION (5 / 4) with Erich Wagner
- 1962 NOV 01 - PHOTOGRAPHIC OBJECTIVE HAVING FOUR LENS MEMBERS (7 / 4)
- 1975 SEP 05 - STILL POCKET CAMERA with Ludwig Leitz
- 1977 MAR 09 - OPTICAL SENSING SYSTEM FOR FOCUSING A REFLEX CAMERA
- 1977 MAY 16 - FOUR MEMBER GAUSS OBJECTIVE (6 / 4) with Erich Wagner and Garry Edwards
