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Anchoring method and article
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Patent number 3,953,910
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Issue date May 4, 1976
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Arthur Farb
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2409759
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Patent number 2,409,759
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Issue date Oct 22, 1946
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2240805
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Patent number 2,240,805
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Issue date May 6, 1941
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL