| Patents for none listed |
Patents 331 -
345
of 3291
      |
| Number | Date | Patentee | Title | Type |
| 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 |
| 1,252,105 | Jan. 01, 1918 | K.G. Gustafson | Crosscut Saw Handle | saw handles |
| 1,252,136 | Jan. 01, 1918 | J.E. Micthell | Machine for Cutting Pieced Lifts and for Building Logs or Heel Blanks Therefrom | cobbler |
| 1,252,162 | Jan. 01, 1918 | E. Bahnik, J. Pauer | Grinding Machine | |
| 1,252,316 | Jan. 01, 1918 | H.W. Bascom | Knife Cleaner | cutler |
| 1,252,335 | Jan. 01, 1918 | R.E. Foote | Tapered Sleeve | drilling and boring tool holders |
| 1,252,424 | Jan. 08, 1918 | H.C. Gamage | Hacksaw | hacksaws |
