| Patents Granted on 1917-03-20 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| FR-482,422 | Mar. 20, 1917 | J.O. Berg | Tool for treating stone, concrete and other materials | handheld power tools |
| 1,219,430 | Mar. 20, 1917 | A.W. Bjornstad | Instrument for Use in Topography | calipers |
| 1,219,481 | Mar. 20, 1917 | G. Leander, L.A. Peterson | Method of Chamfering the Teeth of Gears | gear making machines |
| 1,219,511 | Mar. 20, 1917 | C.W. Weiss | Air Compressor | air compressors |
| 1,219,586 | Mar. 20, 1917 | T.F. Rataiczak | Meat-chopper | butcher |
| 1,219,813 | Mar. 20, 1917 | R.E. Flanders | Metal-working machine | metal lathes |
| 1,219,841 | Mar. 20, 1917 | E.N. Moor | Tool Holder for Lathes | lathe tool holders and tool posts |
| 1,219,935 | Mar. 20, 1917 | G. Gorton | Stock Clamping Mechanism for Cutting Off and Other Machines | cutting-off and centering machines |
| 1,220,086 | Mar. 20, 1917 | B.L. Fry | Grinding-machine | hand grinders |
