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Zoom objective
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Patent number 4,515,446
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Issue date May 7, 1985
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Canon Kabushiki Kaisha
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Sadatoshi Takahashi
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G02 - OPTICS
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Focusing device for a camera
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Patent number 4,500,188
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Issue date Feb 19, 1985
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Canon Kabushiki Kaisha
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Nozomu Kitagishi
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Optical low-pass filter
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Patent number 4,477,148
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Issue date Oct 16, 1984
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Canon Kabushiki Kaisha
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Sadahiko Tsuji
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G02 - OPTICS
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Wide angle zoom lens
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Patent number 4,469,412
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Issue date Sep 4, 1984
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Canon Kabushiki Kaisha
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Akira Tajima
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G02 - OPTICS
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Zoom lens
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Patent number 4,400,064
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Issue date Aug 23, 1983
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Canon Kabushiki Kaisha
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Keiji Ikemori
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G02 - OPTICS
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Light metering system in a camera
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Patent number 4,171,889
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Issue date Oct 23, 1979
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Canon Kabushiki Kaisha
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Yujiro Agari
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Zoom lens system
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Patent number 4,159,865
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Issue date Jul 3, 1979
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Canon Kabushiki Kaisha
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Naoto Kawamura
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G02 - OPTICS
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Zoom lens
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Patent number 4,153,339
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Issue date May 8, 1979
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Canon Kabushiki Kaisha
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Akira Tajima
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G02 - OPTICS
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