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3503433
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Patent number 3,503,433
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Issue date Mar 31, 1970
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3493468
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Patent number 3,493,468
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Issue date Feb 3, 1970
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3471373
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Patent number 3,471,373
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Issue date Oct 7, 1969
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3337420
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Patent number 3,337,420
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Issue date Aug 22, 1967
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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3304727
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Patent number 3,304,727
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Issue date Feb 21, 1967
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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3249147
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Patent number 3,249,147
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Issue date May 3, 1966
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A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES