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3812481
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G01 - MEASURING TESTING
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3710360
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G06 - COMPUTING CALCULATING COUNTING
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3671750
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H03 - BASIC ELECTRONIC CIRCUITRY
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3543375
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3482316
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G01 - MEASURING TESTING
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3466389
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3461307
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G01 - MEASURING TESTING
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3371338
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H03 - BASIC ELECTRONIC CIRCUITRY
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3349388
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H03 - BASIC ELECTRONIC CIRCUITRY
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3344418
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G06 - COMPUTING CALCULATING COUNTING
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3293633
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G11 - INFORMATION STORAGE
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3293636
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G11 - INFORMATION STORAGE
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3281826
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H03 - BASIC ELECTRONIC CIRCUITRY
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3268887
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G01 - MEASURING TESTING
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3259895
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Patent number 3,259,895
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H03 - BASIC ELECTRONIC CIRCUITRY
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3239817
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H03 - BASIC ELECTRONIC CIRCUITRY
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3213444
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H03 - BASIC ELECTRONIC CIRCUITRY
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3201575
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G01 - MEASURING TESTING
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3200395
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H03 - BASIC ELECTRONIC CIRCUITRY
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3192521
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H03 - BASIC ELECTRONIC CIRCUITRY
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3190962
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3007067
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2833941
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2830207
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G11 - INFORMATION STORAGE
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2765459
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G01 - MEASURING TESTING
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2730698
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H03 - BASIC ELECTRONIC CIRCUITRY
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2717987
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2680241
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2597866
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2575342
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G01 - MEASURING TESTING