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Triple-wall foam coextrusion apparatus
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Patent number 4,846,648
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Issue date Jul 11, 1989
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American Maplan Corporation
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Steven E. Spence
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Triple-wall foam coextrusion apparatus
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Patent number 4,731,002
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Issue date Mar 15, 1988
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American Maplan Corporation
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Steven E. Spence
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Pipeline insulation system
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Patent number 4,657,050
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Issue date Apr 14, 1987
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Shell Oil Company
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Maurice M. Patterson
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Purging device for a filler carrier
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Patent number 4,556,374
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Issue date Dec 3, 1985
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Walter G. LeTarte
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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System for applying foam insulation
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Patent number 4,204,612
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Issue date May 27, 1980
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Foam Controls Inc.
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Joseph F. Schrader
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3810337
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Patent number 3,810,337
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Issue date May 14, 1974
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3709751
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Patent number 3,709,751
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Issue date Jan 9, 1973
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3615977
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Patent number 3,615,977
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Issue date Oct 26, 1971
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3249659
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Patent number 3,249,659
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Issue date May 3, 1966
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2837455
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Patent number 2,837,455
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Issue date Jun 3, 1958
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2774120
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Patent number 2,774,120
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Issue date Dec 18, 1956
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2716778
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Patent number 2,716,778
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Issue date Sep 6, 1955
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2688152
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Patent number 2,688,152
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Issue date Sep 7, 1954
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL