| All Patents in class 254/98 |
Patents 1 -
10
of 24
      |
| Picture | Number | Date | Patentee | Title |
 | 202,197 | Apr. 09, 1878 | B.M. Sherman | Improvement in lifting-jacks |
| | 336,793 | Feb. 23, 1886 | T.L. Chapman | Lifting Jack |
| | 364,373 | Jun. 07, 1887 | M. Reisch | Jack Screw |
 | 461,643 | Oct. 20, 1891 | H.W. Robie | Screw-jack |
 | 477,642 | Jun. 28, 1892 | C.E. Brunthaver | Ball-bearing for screw-nuts |
 | 601,451 | Mar. 29, 1898 | H.M. Stevenson | Lifting-jack |
 | 610,044 | Aug. 30, 1898 | D. Glenn | Ball-bearing screw-jack |
 | 614,804 | Nov. 22, 1898 | C.E. Francis | Implement for operating screws |
 | 661,488 | Nov. 13, 1900 | P. Broadbooks | Combination Clamp and Lifting Jack |
| | 788,716 | May 02, 1905 | F.E. Walden, R.A. Hammond | Worm Gearing |
