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All Patents of Type: boiler level gauges
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
138,524May 06, 1873A.P. PitkinWater Indicator for Steam Boilersboiler level gauges
925,361Jun. 15, 1909L.D. LovekinLevel Indicating Gageboiler level gauges
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