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Patents for Ashcroft Mfg. Co.
Patents 1 - 10 of 10
First set of recordsLast set of records
NumberDatePatenteeTitleType
22,157Nov. 30, 1858J.R. BrownPipe-Tongspipe tongs
210,643Dec. 10, 1878H. TaborIndicator for Steam Engines, &c.steam indicators
282,931Aug. 07, 1883J.W. SeeScale for Steam Engine Indicatorssteam indicators
292,169Jan. 22, 1884W.H. MacGregorPressure Gagesteam pressure gauges
427,044May 06, 1890A.B. CalkinsSteam Engine Indicatorsteam indicators
494,482Mar. 28, 1893W. HoughtalingAttachment for Steam Indicatorssteam indicators
533,812Feb. 05, 1895W. HoughtalingSteam Engine Indicatorsteam indicators
538,042Apr. 23, 1895W. HoughtalingSteam Engine Indicatorsteam indicators
538,043Apr. 23, 1895W. HoughtalingSteam Engine Indicatorsteam indicators
646,700Apr. 03, 1900W. HoughtalingSteam Engine Indicatorsteam indicators
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