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Electrostatic support system
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Issue date Jun 10, 1997
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Peter M. Rubino
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Electrostatic notice board system
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Issue date Apr 16, 1996
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Abisare, Co., Ltd.
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Keiji Kasahara
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Billboard device
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Patent number 5,229,910
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Issue date Jul 20, 1993
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Abisare Co., Ltd.
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Keiji Kasahara
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