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United States Utility Patents
4,531,990 - 4,531,999

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NumberTitle
4,531,990 Method for producing a magnetic tape
4,531,991 Heat-insulating tubing
4,531,992 Composite tape preparation and application
4,531,993 High speed method of making envelopes each with a double folded removable enclosure
4,531,994 Process for preparing a thermoformable laminate structure
4,531,995 Labeling machine for containers
4,531,996 Single facer corrugating machine
4,531,997 Forming bead seal in biaxially oriented polymer film by heat bonding
4,531,998 Adjustable tape chute for tape laying machine
4,531,999 Dynamic laminating method and apparatus for ultrasonically bonding juxtaposed webs



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