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Key-lock system
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Patent number 5,065,155
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Issue date Nov 12, 1991
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Sharp Kabushiki Kaisha
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Yoshinori Oogita
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G06 - COMPUTING CALCULATING COUNTING
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Audibly announcing apparatus
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Patent number 4,449,232
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Issue date May 15, 1984
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Sharp Kabushiki Kaisha
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Shintaro Hashimoto
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G06 - COMPUTING CALCULATING COUNTING
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Synthetic-speech calculators
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Patent number 4,282,404
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Issue date Aug 4, 1981
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Sharp Kabushiki Kaisha
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Akira Tanimoto
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G06 - COMPUTING CALCULATING COUNTING
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Synthetic-speech calculators
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Patent number 4,276,444
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Issue date Jun 30, 1981
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Sharp Kabushiki Kaisha
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Akira Tanimoto
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G06 - COMPUTING CALCULATING COUNTING
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Synthetic-speech calculators
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Patent number 4,211,892
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Issue date Jul 8, 1980
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Sharp Kabushiki Kaisha
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Akira Tanimoto
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G06 - COMPUTING CALCULATING COUNTING
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Synthetic-speech calculators
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Patent number 4,185,169
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Issue date Jan 22, 1980
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Sharp Kabushiki Kaisha
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Akira Tanimoto
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G06 - COMPUTING CALCULATING COUNTING
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Synthetic-speech calculators
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Patent number 4,179,584
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Issue date Dec 18, 1979
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Sharp Kabushiki Kaisha
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Akira Tanimoto
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G06 - COMPUTING CALCULATING COUNTING