Erich Wagner
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E. Leitz Photographic Patents by Erich Wagner of Midland, Canada
- 1959 AUG 26 - HIGH APERTURE PHOTOGRAPHIC OBJECTIVE (7 / 5) with Walter Mandler (see 35mm f/1.4 Summilux I)
- 1960 JUL 26 - HIGH APERTURE OBJECTIVE FOR PHOTOGRAPHY AND PROJECTION (5 / 4) with Walter Mandler
- 1969 JUL 13 - OBJECTIVE HAVING LONG BACK FOCAL DISTANCE WITH REGARD TO ITS FOCAL LENGTH (4 / 3 - 8 / 6) with Walter Mandler and Garry Edwards see 28mm f/2.8 Elmarit II
- 1970 JUL 30 - FOUR COMPONENT OBJECTIVE (4 / 4) with Walter Mandler and Garry Edwards (see 90mm f/2.8 Tele-Elmarit-M)
- 1977 MAY 16 - FOUR MEMBER GAUSS OBJECTIVE (6 / 4) with Walter Mandler and Garry Edwards (see above and 50mm f/2 Summicron-R II)
