| Patents Granted on 1920-06-15 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 1,343,227 | Jun. 15, 1920 | H.J. Ostdiek | Caliper Rule | indicating calipers |
| 1,343,257 | Jun. 15, 1920 | J.C. Fletcher | Tool Holder | lathe tool holders and tool posts |
| 1,343,554 | Jun. 15, 1920 | W.F. Fischer | Machine for Forming Grooves | oil grooving machines |
| 1,343,732 | Jun. 15, 1920 | G.O. Leopold | Lifting jack | |
| 1,343,751 | Jun. 15, 1920 | F.L. Simmons | Adjustable V-Block and the Like for Magnetic Chucks | V blocks |
| 1,343,854 | Jun. 15, 1920 | W.H. Spencer | Spreader for rope making | rope maker |
| 1,343,882 | Jun. 15, 1920 | J.J. Woodward | Spanner | wrench jaw components |
