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All Patents in class 374/180
Patents 1 - 1 of 1
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NumberTitleClassification(s)
1,169,617Thermo-electric humidity instrument136/222, 136/224, 236/44R, 340/870.05, 340/870.11, 374/109, 374/180, 374/205, 73/335.02, 73/335.07
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