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3880522
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G01 - MEASURING TESTING
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2839645
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G01 - MEASURING TESTING
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2642772
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G01 - MEASURING TESTING
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Patent number 1,825,229
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G01 - MEASURING TESTING
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G01 - MEASURING TESTING
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1644340
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Patent number 1,644,340
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G01 - MEASURING TESTING
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1561583
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Patent number 1,561,583
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G01 - MEASURING TESTING
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1419725
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G01 - MEASURING TESTING
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1283717
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G01 - MEASURING TESTING
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G01 - MEASURING TESTING
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866462
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G01 - MEASURING TESTING
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G01 - MEASURING TESTING