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Heat splicing of thermoplastic film
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Patent number 5,514,237
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Issue date May 7, 1996
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The Procter & Gamble Company
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Ralph R. Emenaker
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3836089
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Patent number 3,836,089
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Issue date Sep 17, 1974
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3414208
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Patent number 3,414,208
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Issue date Dec 3, 1968
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2242751
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Patent number 2,242,751
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Issue date May 20, 1941
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL