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Spring drive assembly
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Patent number 6,098,757
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Issue date Aug 8, 2000
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International Paper Company
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Everett H. Stephenson
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F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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Extracting system and method
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Patent number 6,019,551
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Issue date Feb 1, 2000
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Internatioal Paper Company
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Everett H. Stephenson
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Boring system and method
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Patent number 5,919,009
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Issue date Jul 6, 1999
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Union Camp Corporation
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Everett H. Stephenson
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B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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