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3886013
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Patent number 3,886,013
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Issue date May 27, 1975
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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3832254
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Patent number 3,832,254
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Issue date Aug 27, 1974
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3733237
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Patent number 3,733,237
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Issue date May 15, 1973
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3685122
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Patent number 3,685,122
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Issue date Aug 22, 1972
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3579317
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Patent number 3,579,317
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Issue date May 18, 1971
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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3540118
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Patent number 3,540,118
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Issue date Nov 17, 1970
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3473988
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Patent number 3,473,988
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Issue date Oct 21, 1969
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2042835
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Patent number 2,042,835
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Issue date Jun 2, 1936
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B32 - LAYERED PRODUCTS
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2030869
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Patent number 2,030,869
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Issue date Feb 18, 1936
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS