| Patents for Richard Dudgeon |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 8,203 | Jul. 08, 1851 | R. Dudgeon | Portable hydraulic press | hydraulic jacks |
| 22,713 | Jan. 25, 1859 | R. Dudgeon | Hydraulic press | hydraulic jacks |
| 137,765 | Apr. 15, 1873 | R. Dudgeon | Improvement in hydraulic jacks | hydraulic jacks |
| 271,154 | Jan. 23, 1883 | J.C. Tanner | Hydraulic jack | hydraulic jacks |
| 297,975 | May 06, 1884 | R.H. Dudgeon | Hydraulic jack | hydraulic jacks |
| 330,759 | Nov. 17, 1885 | J. Weeks, H. Traver | Hydraulic jack | hydraulic jacks |
| 330,760 | Nov. 17, 1885 | J. Weeks | Hydraulic jack | hydraulic jacks |
| 334,206 | Jan. 12, 1886 | J. Weeks, H. Traver | Hydraulic jack | hydraulic jacks |
| 369,992 | Sep. 13, 1887 | O.H. Mechem | Hydraulic jack | hydraulic jacks |
| 395,675 | Jan. 01, 1889 | J. Weeks | Hydraulic punch, &c. | hydraulic apparatus |
| 550,702 | Dec. 03, 1895 | J. Weeks | Hydraulic jack | hydraulic jacks |
| 568,421 | Sep. 29, 1896 | J. Weeks | Dock and vessel leveling device | |
| 571,547 | Nov. 17, 1896 | J. Weeks | Hydraulic jack | hydraulic jacks |
| 706,850 | Aug. 12, 1902 | L.S. Pitcher | Hydraulic jack | hydraulic jacks |
| 1,749,080 | Mar. 04, 1930 | W.H. Mathers | Hydraulic filter press | |
