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Continuous celluloid twin screw extrusion process
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Patent number 9,539,752
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Issue date Jan 10, 2017
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General Dynamics Ordnance and Tactical Systems—Canada Valleyfield, Inc.
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Charles Dubois
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3377218
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Patent number 3,377,218
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Issue date Apr 9, 1968
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C06 - EXPLOSIVES MATCHES
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3377217
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Patent number 3,377,217
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Issue date Apr 9, 1968
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C06 - EXPLOSIVES MATCHES
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3234059
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Patent number 3,234,059
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Issue date Feb 8, 1966
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C06 - EXPLOSIVES MATCHES
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2174914
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Patent number 2,174,914
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Issue date Oct 3, 1939
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C06 - EXPLOSIVES MATCHES
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2096089
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Patent number 2,096,089
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Issue date Oct 19, 1937
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C06 - EXPLOSIVES MATCHES
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1627691
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Patent number 1,627,691
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Issue date May 10, 1927
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C06 - EXPLOSIVES MATCHES