| Patents Granted on 1917-04-10 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 1,221,844 | Apr. 10, 1917 | R.B. Dow | Combined Shaping and Miling Machinery | metal shapers |
| 1,221,984 | Apr. 10, 1917 | A.F. Froussard | Tube Cleaner | tube cleaning machines |
| 1,222,052 | Apr. 10, 1917 | O.S. Walker | magnetic chuck | magnetic chucks |
| 1,222,071 | Apr. 10, 1917 | G.H. Clark | Safety Valve | steam safety valves |
| 1,222,102 | Apr. 10, 1917 | P.F. Holmgren | Tool Holder | metal lathe accessories and attachments |
| 1,222,178 | Apr. 10, 1917 | B.T. Browand | Tool Holder for Automatic Machines | lathe tool holders and tool posts |
| 1,222,188 | Apr. 10, 1917 | A.M. Remington, C.C. deAvila | Crosscut-Saw-Tooth Gage | |
| 1,222,195 | Apr. 10, 1917 | W.M. Fogle | Process for Resharpening Saw-Blades | |
| 1,222,229 | Apr. 10, 1917 | R.L. Mapson | Valve Releasing Device | valve spring tools |
| 1,222,315 | Apr. 10, 1917 | C.J. Manning | Pressure Gage | vacuum and pressure gauges |
| 1,222,448 | Apr. 10, 1917 | R. Nelson | Tool Holder | ratchet drills |
