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Transparent security seal
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Patent number 4,733,893
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Issue date Mar 29, 1988
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Inner-Tite Corporation
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George W. Davis
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G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Tamper indicating cover for a gas meter
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Patent number 4,609,217
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Issue date Sep 2, 1986
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Nielsen, Jr.; Anker J.
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Anker J. Nielsen
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Transition fittings
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Patent number 4,062,572
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Issue date Dec 13, 1977
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Inner-Tite, a division of Yara Engineering Corporation
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George W. Davis
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...