| Patents for William A. Barr |
Patents 46 -
53
of 53
      |
| Number | Date | Patentee | Title | Type |
| 1,059,132 | Apr. 15, 1913 | G.O. Leopold, T.J. Fegley | Bit storage handle for the North Bros. (e.g. 1530 & 1431) eggbeater drills. | drill accessories |
| D44,573 | Aug. 26, 1913 | G.O. Leopold | Design for a Screw-Driver | screwdrivers |
| 1,087,794 | Feb. 17, 1914 | G.O. Leopold | Bench-drill | drill presses |
| 1,103,782 | Jul. 14, 1914 | G.O. Leopold | Bench-drill | drill presses |
| 1,103,783 | Jul. 14, 1914 | G.O. Leopold | Drill | drill presses |
| 1,103,784 | Jul. 14, 1914 | G.O. Leopold | Change-speed mechanism | drill presses |
| 1,169,657 | Jan. 25, 1916 | G.O. Leopold | Drill | drill presses |
| 1,236,848 | Aug. 14, 1917 | G.O. Leopold | Alternate driving means for the North Bros. 1445 drill | hand drills |
