| All Patents in class 60/481 |
Patents 1 -
15
of 28
      |
| Number | Date | Patentee | Title | Type |
| 5,736X | Dec. 02, 1829 | D.H. Mason, M.W. Baldwin | Press, called Bramah's hydrostatic press | |
| 38,187 | Apr. 14, 1863 | J. Tangye | Improvement in hydraulic lifting-jacks | hydraulic jacks |
| 137,765 | Apr. 15, 1873 | R. Dudgeon | Improvement in hydraulic jacks | hydraulic jacks |
| 162,044 | Apr. 13, 1875 | E.M. Dudgeon | Improvement in hydraulic jacks | hydraulic jacks |
| RE6,786 | Dec. 07, 1875 | E.M. Dudgeon | Improvement in hydraulic jacks | hydraulic jacks |
| 219,555 | Sep. 09, 1879 | O.C. Woolson | Improvement in hydraulic-power machines | hydraulic apparatus |
| 271,154 | Jan. 23, 1883 | J.C. Tanner | Hydraulic jack | hydraulic jacks |
| 297,975 | May 06, 1884 | R.H. Dudgeon | Hydraulic jack | hydraulic jacks |
| 302,070 | Jul. 15, 1884 | T.H. Watson | 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 |
| 366,367 | Jul. 12, 1887 | J. Bailey | Hydraulic press | 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 |
