| Patents for R. T. Campbell |
Patents 1 -
10
of 29
      |
| Picture | Number | Date | Patentee | Title |
 | RE374 | Jul. 01, 1856 | S.J. Sherman | Pocket Level |
 | 18,560 | Nov. 03, 1857 | T.R. Timby | Barometer |
 | 27,782 | Apr. 10, 1860 | L. Eames | Mortising-tool |
 | 27,895 | Apr. 17, 1860 | L. Eames | Mortising-machine |
 | 39,182 | Jul. 07, 1863 | I. Straub | Improvement in sugar-cane-crushing mills |
 | 40,650 | Nov. 17, 1863 | I. Straub, A. Straub | Improved artificial variegated marble |
 | 40,651 | Nov. 17, 1863 | I. Straub, A. Straub | Improved asphaltic paving or flag stone |
 | 41,396 | Jan. 26, 1864 | J. Richards | Improvement in in Trying-Squares |
 | 43,386 | Jul. 05, 1864 | W.H. Barney | Rest for Turning Lathes |
 | 46,261 | Feb. 07, 1865 | S. Pennock | Edging Sheet-Metal |
