| All Patents in class 73/732 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 292,169 | Jan. 22, 1884 | W.H. MacGregor | Pressure Gage | steam pressure gauges |
| 568,784 | Oct. 06, 1896 | E.L. Miller | Automatic Recording Instrument | steam engine indicators |
| 643,876 | Feb. 20, 1900 | F. Lane | Pressure Gage | vacuum and pressure gauges |
| 701,793 | Jun. 03, 1902 | E.C. Bates | Pressure Gage | vacuum and pressure gauges |
| 829,614 | Aug. 28, 1906 | F.L. Wolfe | Pressure Recorder | pressure indicators |
| 877,198 | Jan. 21, 1908 | W.E. Jerauld | Automatic Recording Gage | industrial recording apparatus |
| 897,311 | Sep. 01, 1908 | G. Spencer | Pressure Recorder | pressure indicators |
| 898,148 | Sep. 08, 1908 | G. Spencer | Pressure Gage | vacuum and pressure gauges |
| 951,658 | Mar. 08, 1910 | A.P. Phillips | Pressure Recording Gage | pressure indicators |
| 1,063,281 | Jun. 03, 1913 | J.W. Motherwell | Recording-gage | recording gauges |
| 1,169,982 | Feb. 01, 1916 | C.J. Manning | Pressure Gage | vacuum and pressure gauges |
| 1,641,838 | Sep. 06, 1927 | H.J. Burkhardt | Pressure gauge | vacuum and pressure gauges |
| 3,196,688 | Jul. 27, 1965 | N.J. Smith | Bleeder means for gauges | vacuum and pressure gauges |
