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3805536
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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3702887
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C01 - INORGANIC CHEMISTRY
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3433027
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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3388968
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Issue date Jun 18, 1968
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C01 - INORGANIC CHEMISTRY
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3363428
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Patent number 3,363,428
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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2904400
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Issue date Sep 15, 1959
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C01 - INORGANIC CHEMISTRY
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2723184
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Patent number 2,723,184
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C01 - INORGANIC CHEMISTRY
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2604380
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C01 - INORGANIC CHEMISTRY
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2534000
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Patent number 2,534,000
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C01 - INORGANIC CHEMISTRY
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C01 - INORGANIC CHEMISTRY
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2429262
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Patent number 2,429,262
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C01 - INORGANIC CHEMISTRY
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2086507
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C01 - INORGANIC CHEMISTRY
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2042451
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C01 - INORGANIC CHEMISTRY
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1986348
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Patent number 1,986,348
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C01 - INORGANIC CHEMISTRY
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1951520
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Patent number 1,951,520
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C01 - INORGANIC CHEMISTRY
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1934485
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C01 - INORGANIC CHEMISTRY