| Patents for G. W. Gregory |
Patents 31 -
45
of 51
      |
| Number | Date | Patentee | Title | Type |
| 237,962 | Feb. 22, 1881 | O. Corcoran | Mechanism for Assorting Reeds | special purpose gauges |
| 255,115 | Mar. 21, 1882 | B.F. Radford | Metal Planer | metal planers |
| 255,412 | Mar. 28, 1882 | H.F. Campbell | Mechanism for and method of forming hoop-splints | band sawmills |
| 255,418 | Mar. 28, 1882 | C.H. Cowdrey | Self-oiling pulley | industrial machine pulleys and belt drive mechanisms |
| 260,135 | Jun. 27, 1882 | J. Swan | Screw-Driver | screwdriver handles |
| 265,712 | Oct. 10, 1882 | J. Swan | Screw-Driver | screwdriver handles |
| 272,029 | Feb. 13, 1883 | H.F. Campbell | Barrel-hoop-planing machine | hoop making machines |
| 279,204 | Jun. 12, 1883 | J. Swan | Adjustable Auger | adjustable drill bits |
| 280,867 | Jul. 10, 1883 | S. Sawyer | Improvement in Watchmakers Lathes | watchmakers lathes |
| 291,934 | Jan. 15, 1884 | D.R. Porter | Wrench | pipe wrenches |
| 297,717 | Apr. 29, 1884 | P.C. Rich | Ruler | rules |
| 302,527 | Jul. 22, 1884 | J. Swan | Machine for Milling Augers | making drills and augers |
| 303,239 | Aug. 05, 1884 | J. Swan | Mechanism for Manufacturing Augers | making drills and augers |
| 313,456 | Mar. 03, 1885 | J. Swan | Machine for the Manufacture of Auger-Bits | making drills and augers |
| 315,971 | Apr. 14, 1885 | H.D. Stone, A.C. Ambler | Heeling-machine | cobbler |
