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3333923
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Patent number 3,333,923
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Issue date Aug 1, 1967
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C01 - INORGANIC CHEMISTRY
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3298920
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Patent number 3,298,920
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Issue date Jan 17, 1967
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C01 - INORGANIC CHEMISTRY
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3149915
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Patent number 3,149,915
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Issue date Sep 22, 1964
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C01 - INORGANIC CHEMISTRY
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2901320
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Patent number 2,901,320
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Issue date Aug 25, 1959
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C01 - INORGANIC CHEMISTRY
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2695216
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Patent number 2,695,216
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Issue date Nov 23, 1954
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C01 - INORGANIC CHEMISTRY
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2647822
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Patent number 2,647,822
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Issue date Aug 4, 1953
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C01 - INORGANIC CHEMISTRY
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2643936
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Patent number 2,643,936
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Issue date Jun 30, 1953
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C01 - INORGANIC CHEMISTRY
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2643937
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Patent number 2,643,937
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Issue date Jun 30, 1953
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C01 - INORGANIC CHEMISTRY
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2642338
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Patent number 2,642,338
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Issue date Jun 16, 1953
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F28 - HEAT EXCHANGE IN GENERAL
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2548002
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Patent number 2,548,002
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Issue date Apr 10, 1951
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C01 - INORGANIC CHEMISTRY
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2422081
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Patent number 2,422,081
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Issue date Jun 10, 1947
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C01 - INORGANIC CHEMISTRY
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1776308
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Patent number 1,776,308
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Issue date Sep 23, 1930
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C01 - INORGANIC CHEMISTRY