| Patents for Ashton Valve Co. |
Patents 31 -
45
of 50
      |
| Number | Date | Patentee | Title | Type |
| 921,360 | May 11, 1909 | F. Casey | Safety-Valve | steam safety valves |
| 1,063,281 | Jun. 03, 1913 | J.W. Motherwell | Recording-gage | recording gauges |
| 1,066,079 | Jul. 01, 1913 | F. Casey | Signal for trains | |
| D58,477 | Jul. 26, 1921 | C. Gaston | Design for a pressure-indicating gauge | |
| 1,416,794 | May 23, 1922 | A.E. Cutler | Pressure gauge | |
| 1,480,684 | Jan. 15, 1924 | W.S. Hudson | Spring Link | vacuum and pressure gauges |
| 1,621,738 | Mar. 22, 1927 | H.S. Baker, J.W. Motherwell | Retard device | valves |
| 1,639,965 | Aug. 23, 1927 | W.F. Priest | Alarm gauge | steam pressure gauges |
| 1,663,313 | Mar. 20, 1928 | J.W. Motherwell | Adjusting Mechanism for Pressure Gauges | vacuum and pressure gauges |
| 1,734,977 | Nov. 12, 1929 | J.W. Motherwell | Pressure gauge | vacuum and pressure gauges |
| 1,814,092 | Jul. 14, 1931 | J.W. Motherwell | Pressure gauge | vacuum and pressure gauges |
| 1,848,489 | Mar. 08, 1932 | J.W. Motherwell | Pressure gauge | vacuum and pressure gauges |
| 1,915,942 | Jun. 27, 1933 | J.W. Motherwell | Illuminated Gauge | gauge illuminating apparatus |
| 1,933,383 | Oct. 31, 1933 | J.W. Motherwell | Gauge | vacuum and pressure gauges |
| 1,976,938 | Oct. 16, 1934 | W.R. Hedeman | Pressure Gauge | vacuum and pressure gauges |
