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Optical shutter device
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Patent number 5,325,228
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Issue date Jun 28, 1994
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Minolta Camera Kabushiki Kaisha
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Ken Matsubara
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Display apparatus
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Patent number 5,024,511
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Issue date Jun 18, 1991
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Minolta Camera Kabushiki Kaisha
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Ken Matsubara
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Recording apparatus
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Patent number 4,967,240
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Issue date Oct 30, 1990
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Minolta Camera Kabushiki Kaisha
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Hiroshisa Kitano
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G06 - COMPUTING CALCULATING COUNTING
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Image forming apparatus
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Patent number 4,899,183
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Issue date Feb 6, 1990
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Minolta Camera Kabushiki Kaisha
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Hirohisa Kitano
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G06 - COMPUTING CALCULATING COUNTING
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Electro-optical light shutter device
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Patent number 4,854,678
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Issue date Aug 8, 1989
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Minolta Camera Kabushiki Kaisha
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Hirohisa Kitano
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS