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Composite spring-lock coupling
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Patent number 4,775,563
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Issue date Oct 4, 1988
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Charles E. Kaempen
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Composite flanged coupling structure
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Patent number 4,758,024
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Issue date Jul 19, 1988
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Charles E. Kaempen
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Multiple composite twine structure
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Patent number 4,740,422
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Issue date Apr 26, 1988
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Charles E. Kaempen
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Composite twine structure
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Patent number 4,680,923
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Issue date Jul 21, 1987
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Charles E. Kaempen
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Apparatus for making composite structures
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Patent number 3,957,416
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Issue date May 18, 1976
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Kaempen Industries, Inc.
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Charles E. Kaempen
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL