| Patents for Charles T. Porter |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
 | 11,492 | Aug. 08, 1854 | C.T. Porter | Stone-dressing machine |
 | 20,894 | Jul. 13, 1858 | C.T. Porter | Governor for steam-engines |
 | RE740 | Jun. 21, 1859 | C.T. Porter | Improvement in governors for steam-engines |
 | 32,583 | Jun. 18, 1861 | C.T. Porter | Marine governor |
 | 167,865 | Sep. 21, 1875 | J.F. Allen | Improvement in balanced valves |
 | 201,197 | Mar. 12, 1878 | C.T. Porter | Improvement in journal-boxes |
| | RE9,303 | Jul. 20, 1880 | J.F. Allen | Balanced valve |
 | 242,976 | Jun. 14, 1881 | C.T. Porter | Base-plate for horizontal engines |
 | 368,422 | Aug. 16, 1887 | C.T. Porter | Valve for steam-engines |
 | 391,916 | Oct. 30, 1888 | C.T. Porter | Steam-engine |
