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Klaus-Dieter Schaefer
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Braunfels, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Manually operable flashlight unit
Patent number
6,175,695
Issue date
Jan 16, 2001
Leica Camera AG
Klaus Dieter Schaefer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Compact photographic objective of the triplet type having improved...
Patent number
5,321,555
Issue date
Jun 14, 1994
Leica Camera GmbH
Lothar Koelsch
G02 - OPTICS
Information
Patent Grant
Focusing detector having a scanning grating used both as a beam spl...
Patent number
4,816,664
Issue date
Mar 28, 1989
Ernst Leitz Wetzlar GmbH
Klaus-Dieter Schaefer
G02 - OPTICS
Information
Patent Grant
Method and circuit arrangement for the automatic determination of a...
Patent number
4,712,903
Issue date
Dec 15, 1987
Ernst Leitz Wetzlar GmbH
Klaus-Dieter Schaefer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Mirror reflex camera with exposure meter
Patent number
4,496,231
Issue date
Jan 29, 1985
Ernst Leitz Wetzlar GmbH
Knut Heitmann
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Device for correctively compensating the aperture error in reproduc...
Patent number
4,482,220
Issue date
Nov 13, 1984
Ernst Leitz Wetzlar GmbH
Klaus D. Schaefer
G02 - OPTICS
Information
Patent Grant
Reflex camera with electronic range finder
Patent number
4,447,143
Issue date
May 8, 1984
Ernst Leitz Wetzlar GmbH
Knut Heitmann
G02 - OPTICS
Information
Patent Grant
Mirror reflex camera with an electronic range finder
Patent number
4,428,653
Issue date
Jan 31, 1984
Ernst Leitz Wetzlar GmbH
Klaus-Dieter Schaefer
G02 - OPTICS
Information
Patent Grant
Photographic camera
Patent number
4,273,430
Issue date
Jun 16, 1981
Ernst Leitz Wetzlar GmbH
Rainer Fritsche
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Optical electronic focusing device
Patent number
4,220,406
Issue date
Sep 2, 1980
Ernst Leitz Wetzlar GmbH
Klaus-Dieter Schaefer
G02 - OPTICS
Information
Patent Grant
Mirror reflex camera with electronic rangefinder
Patent number
4,188,102
Issue date
Feb 12, 1980
Ernst Leitz Wetzlar GmbH
Klaus-Dieter Schaefer
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY