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Issue date Aug 12, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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2887611
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H01 - BASIC ELECTRIC ELEMENTS
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2853648
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Patent number 2,853,648
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H01 - BASIC ELECTRIC ELEMENTS
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2849635
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H01 - BASIC ELECTRIC ELEMENTS
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2805359
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Patent number 2,805,359
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H01 - BASIC ELECTRIC ELEMENTS
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2803770
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H01 - BASIC ELECTRIC ELEMENTS
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2774909
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H01 - BASIC ELECTRIC ELEMENTS
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2756364
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H01 - BASIC ELECTRIC ELEMENTS
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2735035
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Issue date Feb 14, 1956
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H01 - BASIC ELECTRIC ELEMENTS
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2733292
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H01 - BASIC ELECTRIC ELEMENTS
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2717919
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2713129
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Patent number 2,713,129
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Issue date Jul 12, 1955
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H01 - BASIC ELECTRIC ELEMENTS
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2667600
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Patent number 2,667,600
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H01 - BASIC ELECTRIC ELEMENTS
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2651674
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2619531
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2617058
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H01 - BASIC ELECTRIC ELEMENTS
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2518434
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H01 - BASIC ELECTRIC ELEMENTS
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2286280
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H01 - BASIC ELECTRIC ELEMENTS
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2264540
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H01 - BASIC ELECTRIC ELEMENTS
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2262123
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H01 - BASIC ELECTRIC ELEMENTS
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2258728
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H01 - BASIC ELECTRIC ELEMENTS
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2251573
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H01 - BASIC ELECTRIC ELEMENTS
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2244466
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H01 - BASIC ELECTRIC ELEMENTS
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2237679
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H01 - BASIC ELECTRIC ELEMENTS
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2227097
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H01 - BASIC ELECTRIC ELEMENTS
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2225063
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Patent number 2,225,063
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H01 - BASIC ELECTRIC ELEMENTS
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2214973
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H01 - BASIC ELECTRIC ELEMENTS
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2213547
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H01 - BASIC ELECTRIC ELEMENTS
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2213761
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H01 - BASIC ELECTRIC ELEMENTS
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2213173
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H01 - BASIC ELECTRIC ELEMENTS