| Patents for R. B. Robbins |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 81,511 | Aug. 25, 1868 | P.H. Kells | Improved brick-machine | manufacturing bricks and tiles |
| 100,541 | Mar. 08, 1870 | A.Z. Mason | Woodworker's Leg Vise Jaw | leg vises |
| 124,590 | Mar. 12, 1872 | P.H. Kells | Improvement in brick-machines | manufacturing bricks and tiles |
| 172,271 | Jan. 18, 1876 | J. Trainor, A. Kimball | Improvement in horseshoe-calking vises | anvils |
| 202,948 | Apr. 30, 1878 | P.H. Kells | Improvement in brick and tile machines | manufacturing bricks and tiles |
| 363,588 | May 24, 1887 | F.M. Carnahan | Stump-sawing machine | tree felling machines |
