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H03 - BASIC ELECTRONIC CIRCUITRY
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3704420
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H03 - BASIC ELECTRONIC CIRCUITRY
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3370123
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3358183
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3085210
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H03 - BASIC ELECTRONIC CIRCUITRY
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3017581
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H03 - BASIC ELECTRONIC CIRCUITRY
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2985849
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2965862
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Patent number 2,965,862
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H03 - BASIC ELECTRONIC CIRCUITRY
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2953636
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2948869
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H03 - BASIC ELECTRONIC CIRCUITRY
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2927286
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H03 - BASIC ELECTRONIC CIRCUITRY
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2868979
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H03 - BASIC ELECTRONIC CIRCUITRY
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2858436
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2843741
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H03 - BASIC ELECTRONIC CIRCUITRY
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2836712
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H03 - BASIC ELECTRONIC CIRCUITRY
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2831106
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H03 - BASIC ELECTRONIC CIRCUITRY
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2817057
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H03 - BASIC ELECTRONIC CIRCUITRY
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2782375
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H03 - BASIC ELECTRONIC CIRCUITRY
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2781492
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H03 - BASIC ELECTRONIC CIRCUITRY
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2780726
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H03 - BASIC ELECTRONIC CIRCUITRY
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2777992
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H03 - BASIC ELECTRONIC CIRCUITRY
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2777055
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H03 - BASIC ELECTRONIC CIRCUITRY
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2756336
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2743369
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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2737923
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2725476
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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2716218
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H03 - BASIC ELECTRONIC CIRCUITRY
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2691106
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H03 - BASIC ELECTRONIC CIRCUITRY
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2677049
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H03 - BASIC ELECTRONIC CIRCUITRY
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2676262
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H03 - BASIC ELECTRONIC CIRCUITRY