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All Patents in class 340/870.05
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,169,617Jan. 25, 1916E.W. ComfortThermo-electric humidity instrument
3,553,647Jan. 05, 1971T.B. BullockApparatus for Numerical Signaling of Positions, Including Digital to Analog Converternc and cnc apparatus
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