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Acoustic energy shaping
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Patent number 4,052,181
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Issue date Oct 4, 1977
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James C. Administrator of the National Aeronautics and Space Administration,...
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C03 - GLASS MINERAL OR SLAG WOOL
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3868010
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Patent number 3,868,010
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Issue date Feb 25, 1975
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3790087
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Patent number 3,790,087
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Issue date Feb 5, 1974
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3726659
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Patent number 3,726,659
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Issue date Apr 10, 1973
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3567265
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Patent number 3,567,265
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Issue date Mar 2, 1971
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C03 - GLASS MINERAL OR SLAG WOOL
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3537833
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Patent number 3,537,833
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Issue date Nov 3, 1970
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C03 - GLASS MINERAL OR SLAG WOOL