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All Patents in class 73/114.18
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,426,735Aug. 22, 1922C.E. Reddig, W.F. HendryMethod and Apparatus for Recording Pressurepressure indicators
1,447,913Mar. 06, 1923W.C. Duryea, A. TrowbridgeRecording Indicatorpressure indicators
1,490,223Apr. 15, 1924T. Midgley, Jr.Indicatorpressure indicators
1,492,754May 06, 1924J.H. SheatsEngine Indicatorinternal combustion engine indicators
1,511,574Oct. 14, 1924E.H. MortsellIndicating and Recording Instrumentinternal combustion engine indicators
1,539,978Jun. 02, 1925G.B. VroomChronographsteam engine indicators
2,365,227Dec. 19, 1944C. UnterbergEngine Operation Analyzerinternal combustion engine indicators
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