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3917973
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Patent number 3,917,973
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Issue date Nov 4, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3826948
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Patent number 3,826,948
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Issue date Jul 30, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3824424
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Patent number 3,824,424
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H01 - BASIC ELECTRIC ELEMENTS
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3820206
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Patent number 3,820,206
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H01 - BASIC ELECTRIC ELEMENTS
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3814972
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Patent number 3,814,972
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Issue date Jun 4, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3737711
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Patent number 3,737,711
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H01 - BASIC ELECTRIC ELEMENTS
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3594604
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Patent number 3,594,604
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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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H01 - BASIC ELECTRIC ELEMENTS
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3549930
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Patent number 3,549,930
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H01 - BASIC ELECTRIC ELEMENTS
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3524098
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Patent number 3,524,098
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H01 - BASIC ELECTRIC ELEMENTS
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3506870
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Patent number 3,506,870
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H01 - BASIC ELECTRIC ELEMENTS
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3445712
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H01 - BASIC ELECTRIC ELEMENTS
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3381166
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H01 - BASIC ELECTRIC ELEMENTS
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3366823
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Issue date Jan 30, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3327156
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Patent number 3,327,156
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H01 - BASIC ELECTRIC ELEMENTS
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3287597
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H01 - BASIC ELECTRIC ELEMENTS
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3267314
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H01 - BASIC ELECTRIC ELEMENTS
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2996637
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H01 - BASIC ELECTRIC ELEMENTS
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2995673
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Patent number 2,995,673
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H01 - BASIC ELECTRIC ELEMENTS
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2964664
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Patent number 2,964,664
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Issue date Dec 13, 1960
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H01 - BASIC ELECTRIC ELEMENTS
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2962619
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Patent number 2,962,619
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H01 - BASIC ELECTRIC ELEMENTS
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2957997
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Patent number 2,957,997
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H01 - BASIC ELECTRIC ELEMENTS
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2952789
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Patent number 2,952,789
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H01 - BASIC ELECTRIC ELEMENTS
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2951172
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H01 - BASIC ELECTRIC ELEMENTS
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2950411
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H01 - BASIC ELECTRIC ELEMENTS
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2939986
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Patent number 2,939,986
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H01 - BASIC ELECTRIC ELEMENTS
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2939988
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Patent number 2,939,988
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Issue date Jun 7, 1960
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H01 - BASIC ELECTRIC ELEMENTS
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2939032
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Patent number 2,939,032
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Issue date May 31, 1960
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H01 - BASIC ELECTRIC ELEMENTS