| Patents Granted on 1922-04-11 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 1,412,069 | Apr. 11, 1922 | F.E. Stevenson | Automatic Control for Hydraulic Pumps | hydraulic machinery |
| 1,412,145 | Apr. 11, 1922 | H.H. Stephens | Centrifugal machine | washing machines |
| 1,412,162 | Apr. 11, 1922 | R.C. Browning | Wraparound Framing Square | squares |
| 1,412,244 | Apr. 11, 1922 | A.M. Hill | Material holder for slicing machines | meat slicers |
| 1,412,284 | Apr. 11, 1922 | S.J. Hellman | Tool Holder | tool holders |
| 1,412,469 | Apr. 11, 1922 | F.A. Jimerson | Fluid-actuated rotary tool | pneumatic tools |
| 1,412,550 | Apr. 11, 1922 | B.L. Bentley | Screw Gripping Screwdriver | screwdriver blades |
| 1,412,555 | Apr. 11, 1922 | S. Deutsch | Patternmaker's Marking Gage | curve marking gauges |
| 1,412,609 | Apr. 11, 1922 | G. Eger | Depth Gage for Combination Plane | combination planes |
| 1,412,688 | Apr. 11, 1922 | E.T. Hopkins, J.L. Layton | Tool Holder | tool holders |
| 1,412,702 | Apr. 11, 1922 | B.F. Nightlinger, Sr. | Wrench | screw adjust wrenches |
| 1,412,806 | Apr. 11, 1922 | D.C. Klausmeyer | Strain Reverter | radial drill presses |
