| Patents for Richard Dudgeon |
Patents 1 -
11
of 11
      |
| 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 |
| 43,673 | Aug. 02, 1864 | R. Dudgeon | Drill | drill bits |
| 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 |
| 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 |
| RE10,865 | Sep. 13, 1887 | R.H. Dudgeon | 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 |
