| Patents Granted on 1920-04-13 |
Patents 1 -
14
of 14
      |
| Number | Date | Patentee | Title | Type |
| 1,336,443 | Apr. 13, 1920 | W.C. Reinhardt, O.H. Banker | Portable rail-hacksaw | power hacksaws |
| 1,336,466 | Apr. 13, 1920 | J.M. Lamb | Tool Holder or Tool | drilling and boring tool holders |
| 1,336,754 | Apr. 13, 1920 | R. Parmelee | Vise | pipe and chain vises |
| 1,336,755 | Apr. 13, 1920 | R. Parmelee | Vise | pipe and chain vises |
| 1,336,794 | Apr. 13, 1920 | S. Stepanian | Grease Cup Wrench | wrenches |
| 1,336,810 | Apr. 13, 1920 | A.O. Benecke | Engine Indicator | steam engine indicators |
| 1,336,928 | Apr. 13, 1920 | F.L. Simmons | Method and Apparatus for Alining Work on V Blocks and the Like for Magnetic Chucks | magnetic chuck accessories |
| 1,336,981 | Apr. 13, 1920 | F. Schimmel | Book-rack | |
| 1,337,016 | Apr. 13, 1920 | D.W. Jenkings | Detachable Tooth Saw | |
| 1,337,018 | Apr. 13, 1920 | A.F. Lawson, G.B. Lockey | Thread Gage | measurement gauges |
| 1,337,139 | Apr. 13, 1920 | G.C. Kimmel | Grinding Machine | internal grinders |
| 1,337,140 | Apr. 13, 1920 | G.C. Kimmel | Grinding Machine | internal grinders |
| 1,337,143 | Apr. 13, 1920 | W.F. McCarty | Tenoning and equalizing machine | tenoning machines |
| 1,337,165 | Apr. 13, 1920 | L.D. Spence | Caliper | measurement gauges |
