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Dictating machine
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Patent number 4,426,738
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Issue date Jan 17, 1984
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Olympus Optical Company Limited
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Masanobu Sato
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G11 - INFORMATION STORAGE
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Rewind device
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Patent number 4,424,942
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Issue date Jan 10, 1984
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Olympus Optical Company Limited
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Masanobu Sato
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G11 - INFORMATION STORAGE
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Superminiature microphone device
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Patent number 4,410,772
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Issue date Oct 18, 1983
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Olympus Optical Company Limited
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Masanobu Sato
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Main switch for tape recorder
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Patent number 4,380,691
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Issue date Apr 19, 1983
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Olympus Optical Co., Ltd.
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Masanobu Sato
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H01 - BASIC ELECTRIC ELEMENTS
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Microphone device
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Patent number 4,293,742
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Issue date Oct 6, 1981
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Olympus Optical Company Limited
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Masanobu Sato
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G11 - INFORMATION STORAGE
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-
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Tape recorder
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Patent number 4,253,124
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Issue date Feb 24, 1981
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Olympus Optical Co., Ltd.
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Masanobu Sato
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G11 - INFORMATION STORAGE
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Tape recorder
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Patent number 4,214,282
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Issue date Jul 22, 1980
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Olympus Optical Co., Ltd.
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Masanobu Sato
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G11 - INFORMATION STORAGE
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