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3708338
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Patent number 3,708,338
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Issue date Jan 2, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3658594
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Patent number 3,658,594
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Issue date Apr 25, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3618564
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Patent number 3,618,564
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Issue date Nov 9, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3609847
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Patent number 3,609,847
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Issue date Oct 5, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3556852
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Patent number 3,556,852
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Issue date Jan 19, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3518120
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Patent number 3,518,120
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Issue date Jun 30, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3486941
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Patent number 3,486,941
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Issue date Dec 30, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3459595
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Patent number 3,459,595
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Issue date Aug 5, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3436266
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Patent number 3,436,266
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Issue date Apr 1, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3433674
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Patent number 3,433,674
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Issue date Mar 18, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3413728
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Patent number 3,413,728
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Issue date Dec 3, 1968
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F26 - DRYING
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3328893
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Patent number 3,328,893
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Issue date Jul 4, 1967
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H01 - BASIC ELECTRIC ELEMENTS
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3291641
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Patent number 3,291,641
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Issue date Dec 13, 1966
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H01 - BASIC ELECTRIC ELEMENTS
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3173809
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Patent number 3,173,809
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Issue date Mar 16, 1965
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H01 - BASIC ELECTRIC ELEMENTS
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3065287
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Patent number 3,065,287
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Issue date Nov 20, 1962
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H01 - BASIC ELECTRIC ELEMENTS
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3054607
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Patent number 3,054,607
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Issue date Sep 18, 1962
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H01 - BASIC ELECTRIC ELEMENTS
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3038018
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Patent number 3,038,018
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Issue date Jun 5, 1962
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H01 - BASIC ELECTRIC ELEMENTS
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2978528
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Patent number 2,978,528
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Issue date Apr 4, 1961
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F26 - DRYING