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3919597
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Patent number 3,919,597
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Issue date Nov 11, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3887828
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Patent number 3,887,828
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Issue date Jun 3, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3881547
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Patent number 3,881,547
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Issue date May 6, 1975
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F28 - HEAT EXCHANGE IN GENERAL
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3872345
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Patent number 3,872,345
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Issue date Mar 18, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3859551
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Patent number 3,859,551
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Issue date Jan 7, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3845341
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Patent number 3,845,341
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Issue date Oct 29, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3803509
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Patent number 3,803,509
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Issue date Apr 9, 1974
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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3800182
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Patent number 3,800,182
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Issue date Mar 26, 1974
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F28 - HEAT EXCHANGE IN GENERAL
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3716736
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Patent number 3,716,736
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Issue date Feb 13, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3658125
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Patent number 3,658,125
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Issue date Apr 25, 1972
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F28 - HEAT EXCHANGE IN GENERAL
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3656545
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Patent number 3,656,545
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Issue date Apr 18, 1972
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F28 - HEAT EXCHANGE IN GENERAL
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3653433
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Patent number 3,653,433
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Issue date Apr 4, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3645329
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Patent number 3,645,329
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Issue date Feb 29, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3644769
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Patent number 3,644,769
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Issue date Feb 22, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3586100
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Patent number 3,586,100
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Issue date Jun 22, 1971
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F28 - HEAT EXCHANGE IN GENERAL
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3585429
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Patent number 3,585,429
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Issue date Jun 15, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3575632
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Patent number 3,575,632
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Issue date Apr 20, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3567981
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Patent number 3,567,981
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Issue date Mar 2, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3560778
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Patent number 3,560,778
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Issue date Feb 2, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3558952
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Patent number 3,558,952
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Issue date Jan 26, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3558969
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Patent number 3,558,969
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Issue date Jan 26, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3551717
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Patent number 3,551,717
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Issue date Dec 29, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3543069
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Patent number 3,543,069
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Issue date Nov 24, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3536960
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Patent number 3,536,960
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Issue date Oct 27, 1970
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F24 - HEATING RANGES VENTILATING
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3521705
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Patent number 3,521,705
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Issue date Jul 28, 1970
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F28 - HEAT EXCHANGE IN GENERAL
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3493810
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Patent number 3,493,810
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Issue date Feb 3, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3487328
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Patent number 3,487,328
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Issue date Dec 30, 1969
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F28 - HEAT EXCHANGE IN GENERAL
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3476177
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Patent number 3,476,177
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Issue date Nov 4, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3435283
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Patent number 3,435,283
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Issue date Mar 25, 1969
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H01 - BASIC ELECTRIC ELEMENTS