| Patents for Berlin Machine Works |
Patents 1 -
15
of 77
      |
| Number | Date | Patentee | Title | Type |
| 226,273 | Apr. 06, 1880 | J.L. Perry, A. Bridgman | Wood-polishing machines | drum sanders |
| 240,179 | Apr. 12, 1881 | J.L. Perry | Sanding machine | sanding machines |
| 273,304 | Mar. 06, 1883 | J.L. Perry | Abrading cutter-head | sanding machines |
| 285,666 | Sep. 25, 1883 | J.L. Perry | Abrading-cylinder | sanding machines |
| 352,988 | Nov. 23, 1886 | J. Challoner, A. Bridgman | Drum sander | sanding machines |
| 392,663 | Nov. 13, 1888 | J.E. Carpenter | Wood-polishing machine | sanding machines |
| 399,629 | Mar. 12, 1889 | J.L. Perry | Polishing-cylinder | sanding machines |
| 416,801 | Dec. 10, 1889 | O.B. Osborn, E.G. Richards | Wood-polishing machine | sanding machines |
| 425,376 | Apr. 08, 1890 | L.D. Forbes | Abrading-cylinder | sanding machines |
| 441,633 | Dec. 02, 1890 | J.B. Bennett, A.P. Boardman | Vibrator-attachment for polishing-machines | sanding machines |
| 441,634 | Dec. 02, 1890 | J.B. Bennett, A.P. Boardman | Polishing-machine | |
| 441,635 | Dec. 02, 1890 | J.B. Bennett, A.P. Boardman | Polisher | sanding machines |
| 441,636 | Dec. 02, 1890 | J.B. Bennett | Drum sanding machine | sanding machines |
| 445,030 | Jan. 20, 1891 | A.P. Boardman | Polishing-machine | sanding machines |
| 447,047 | Feb. 24, 1891 | J.L. Perry | Wood-polishing machine | sanding machines |
