| Patents for none listed |
Patents 316 -
330
of 3142
      |
| Number | Date | Patentee | Title | Type |
| 1,239,688 | Sep. 11, 1917 | G.F. Harris | Combination Petcock Wrench and Cleaning Tool | automotive specialty wrenches |
| GB-109,525 | Sep. 20, 1917 | J. Boe | Improved Attachment for Spanners to Convert them into Pipe Grips and the like | pipe jaw attachments for wrenches |
| 1,242,906 | Oct. 16, 1917 | B.F. Augustine | Shaft Coupling | industrial machine shaft couplings |
| 1,244,526 | Oct. 30, 1917 | G.C. Boswell, L.G. Massicotte | Valve Grinder | valve grinding tools |
| 1,244,981 | Oct. 30, 1917 | H. Hood | Screw Driver | screwdriver handles |
| 1,246,000 | Nov. 06, 1917 | R.B. Ferguson | Wrench | screw adjust wrenches |
| 1,246,447 | Nov. 13, 1917 | C.W. McDaniel | Duplex Wrench | socket wrenches |
| 1,250,512 | Dec. 18, 1917 | J.B. Rose | Valve-Grinding Tool | valve grinding tools |
| 1,251,527 | Jan. 01, 1918 | S. Hough | Adustable & Improved Cutting Head for Boring Out Shells | lathe tools |
| 1,251,578 | Jan. 01, 1918 | W.E. Riecken | Shaping Machine | |
| 1,251,648 | Jan. 01, 1918 | R.J. Dunn | Calipers | measurement gauges |
| 1,251,665 | Jan. 01, 1918 | L. Hirsh | Electric Riveting Tool | rivet making machines |
| 1,251,712 | Jan. 01, 1918 | J.S. Wakimoto | Chalk Line Holder & Reel | |
| 1,251,905 | Jan. 01, 1918 | M.R. Martin | Grinding Disc or Bur | |
| 1,252,009 | Jan. 01, 1918 | F.O. Jaques, Sr. | Micrometer Caliper Thimble | micrometers |
