| Patents Granted on 1930-03-11 |
Patents 1 -
14
of 14
      |
| Number | Date | Patentee | Title | Type |
| 1,749,861 | Mar. 11, 1930 | W.W. Vosper | Pipe Cutter | pipe cutting machines |
| 1,749,938 | Mar. 11, 1930 | W.H. Hall | Double-cylinder planer | wood planers |
| 1,750,011 | Mar. 11, 1930 | J. Kneier | Socket Wrench Set | socket wrenches |
| 1,750,029 | Mar. 11, 1930 | W.E. Sykes | Method of Cutting Gear Teeth | gear making machines |
| 1,750,043 | Mar. 11, 1930 | W.C. Kress | Chain Pipe Wrench | chain and strap wrenches |
| 1,750,047 | Mar. 11, 1930 | G.A. Metzger | Air-cooling apparatus | |
| 1,750,175 | Mar. 11, 1930 | H.W. Holmes | Truing Device | grinding machines |
| 1,750,446 | Mar. 11, 1930 | J.D. Wallace, C.H. Landis | Dynamo-electric machine | electric motors |
| 1,750,453 | Mar. 11, 1930 | W.I. Thompson | Tractor | tractors |
| 1,750,458 | Mar. 11, 1930 | J. Burke | Ventilating system | blowers |
| 1,750,472 | Mar. 11, 1930 | W. Huckinghaus | Handsaw | saw handles |
| 1,750,555 | Mar. 11, 1930 | W.E. Whipp | Geared Headstock for Lathes | engine lathes |
| 1,750,589 | Mar. 11, 1930 | W.F. Groene | Automatic Lathe Control | machine tool controls |
| 1,750,605 | Mar. 11, 1930 | C.S. Price | Emblem holder | |
