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3897546
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Patent number 3,897,546
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Issue date Jul 29, 1975
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F28 - HEAT EXCHANGE IN GENERAL
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3745668
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Patent number 3,745,668
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Issue date Jul 17, 1973
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F28 - HEAT EXCHANGE IN GENERAL
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3656933
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Patent number 3,656,933
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Issue date Apr 18, 1972
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3632312
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Patent number 3,632,312
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Issue date Jan 4, 1972
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C01 - INORGANIC CHEMISTRY
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3632974
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Patent number 3,632,974
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Issue date Jan 4, 1972
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3386815
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Patent number 3,386,815
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Issue date Jun 4, 1968
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3198602
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Patent number 3,198,602
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3181944
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Patent number 3,181,944
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Issue date May 4, 1965
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3172755
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Patent number 3,172,755
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Issue date Mar 9, 1965
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3169853
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Patent number 3,169,853
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Issue date Feb 16, 1965
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3160496
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Patent number 3,160,496
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Issue date Dec 8, 1964
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C21 - METALLURGY OF IRON
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3059995
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Patent number 3,059,995
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Issue date Oct 23, 1962
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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3053651
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Patent number 3,053,651
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2993778
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Patent number 2,993,778
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2978297
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Patent number 2,978,297
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2889202
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Patent number 2,889,202
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2889203
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Patent number 2,889,203
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Issue date Jun 2, 1959
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2878102
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Patent number 2,878,102
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Issue date Mar 17, 1959
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2867526
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Patent number 2,867,526
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Issue date Jan 6, 1959
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2867506
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Patent number 2,867,506
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Issue date Jan 6, 1959
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2847281
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Patent number 2,847,281
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2789034
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Patent number 2,789,034
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Issue date Apr 16, 1957
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C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
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2768880
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Patent number 2,768,880
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Issue date Oct 30, 1956
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C01 - INORGANIC CHEMISTRY