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Structural cores and their fabrication
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Patent number 4,241,117
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Issue date Dec 23, 1980
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The United States of America as represented by the Secretary of the Army
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Irving E. Figge
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E04 - BUILDING
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Prestressed article
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Patent number 4,230,764
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Issue date Oct 28, 1980
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The United States of America as represented by the Secretary of the Army
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Irving E. Figge
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Bonding plastic layers
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Patent number 4,201,612
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Issue date May 6, 1980
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The United States of America as represented by the Secretary of the Army
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Irving E. Figge
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Prestressed article
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Patent number 4,194,938
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Issue date Mar 25, 1980
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The United States of America as represented by the Secretary of the Army
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Irving E. Figge
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL