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JPH06262893A
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Copy forgery preventing paper adapted to copying machine
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JPH0281698A
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Copy forgery preventive paper
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JPS63256980A
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Unrecopiable paper
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JPS63139797A
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Recopying incapable sheet
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JPS63127423A
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Magnetic recording medium
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JPS6387297A
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Recopying incapable paper
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JPS62170964A
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Production of film positive plate for forming copy preventing paper
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JPS61205179A
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Manufacture of paper for preventing forgery copy
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JPS61120791A
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Transfer of magnetic layer
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JPS6189887A
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Heat-transfer original paper
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JPS6184636A
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Film image receiving paper for ohp
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JPS615996A
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Paper which cannot be recopied
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JPS60230657A
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Manufacture of original film for forming print prevented from improper copying
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JPS60119560A
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Manufacture of film plate for making preventive printed matter against illegal use by copying
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JPS6087380A
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Camouflaging method of latent image for copy prevention on printed matter
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JPS6079991A
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Printed matter suitable for preventing duplication
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JPS6048065A
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Copy preventing method by laminate
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JPS6017778A
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Copy impossible form and its manufacture
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JPS59222398A
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Print suitable for forgery prevention
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JPS58220746A
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Fitting method of carbon printing board
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