All Patents of Type: rpm speed gauges and tachometers |
Patents 1 -
12
of 12
|
Number | Date | Patentee | Title | Type |
XC-6 | Oct. 31, 1826 | C. Laurier | Machine or instrument called 'Loch Terrestre,' for accurately ascertaining the number of rotatory motions or revolutions of carriage-wheels, millstones, &c. | rpm speed gauges and tachometers |
139,184 | May 20, 1873 | J.W. Osborne | Speed Gage | rpm speed gauges and tachometers |
182,177 | Sep. 12, 1876 | E. Wright, D. Davis, Jr. | Rotary Measure | rpm speed gauges and tachometers |
454,391 | Jun. 16, 1891 | E. Verstraete | Speed Recorder and Register | rpm speed gauges and tachometers |
680,988 | Aug. 20, 1901 | S.B. Storer | Magnetic Speed Indicator | rpm speed gauges and tachometers |
705,514 | Jul. 22, 1902 | H.S. Credlebaugh | Speed Gage | rpm speed gauges and tachometers |
759,512 | May 10, 1904 | H. Frahm | Method of Measuring the Revolutions of Rotating Shafts | rpm speed gauges and tachometers |
857,979 | Jun. 25, 1907 | W.L. Bryant | Tachometer | rpm speed gauges and tachometers |
868,055 | Oct. 15, 1907 | F.L. Wolfe | Recording Counter | rpm speed gauges and tachometers |
871,849 | Nov. 26, 1907 | F.L. Wolfe | Recording Counter | rpm speed gauges and tachometers |
873,754 | Dec. 17, 1907 | P.L. Johnson | Registering Counter | rpm speed gauges and tachometers |
1,437,353 | Nov. 28, 1922 | J.W. Parker | Revolution counter | rpm speed gauges and tachometers |