Rudolf Ruehl: Difference between revisions

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*1966 MAR 28 - PHOTO LENS WITH A SHORT FOCAL LENGTH AND LARGER BACK INTERCEPTOR FOCAL LENGTH (7 / 5)
*1966 MAR 28 - PHOTO LENS WITH A SHORT FOCAL LENGTH AND LARGER BACK INTERCEPTOR FOCAL LENGTH (7 / 5)
*1972 MAR 22 - WIDE ANGLE LENS (8 / 8 - see above and [[28mm f/2.8 Summicron-R I]])
*1972 MAR 22 - WIDE ANGLE LENS (8 / 8 - see above and [[28mm f/2.8 Elmarit-R I]])

Revision as of 16:07, 8 April 2012

E. Leitz Photographic Patents by Rudolf Ruehl

  • 1966 MAR 28 - PHOTO LENS WITH A SHORT FOCAL LENGTH AND LARGER BACK INTERCEPTOR FOCAL LENGTH (7 / 5)
  • 1972 MAR 22 - WIDE ANGLE LENS (8 / 8 - see above and 28mm f/2.8 Elmarit-R I)