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Portable terminal device
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Patent number 5,227,615
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Issue date Jul 13, 1993
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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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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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IC card with fewer input keys
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Patent number 4,806,745
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Issue date Feb 21, 1989
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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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Card-type processing device
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Patent number 4,804,828
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Issue date Feb 14, 1989
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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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Thin electronic apparatus
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Patent number 4,762,983
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Issue date Aug 9, 1988
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Sharp Kabushiki Kaisha
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Yoshinori Oogita
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H01 - BASIC ELECTRIC ELEMENTS
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Paper battery
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Patent number 4,751,150
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Issue date Jun 14, 1988
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Sharp Kabushiki Kaisha
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Yoshinori Oogita
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H01 - BASIC ELECTRIC ELEMENTS
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