| Patents for George O. Leopold |
Patents 1 -
15
of 80
      |
| Number | Title | Classification(s) |
| 864,633 | Screw holder for drivers | 81/453 |
| 894,673 | Ratchet mechanism | 193/44, 74/134, 74/575 |
| 906,902 | Speed-change gear | 74/366, 81/34 |
| 908,872 | Ball bearing | 16/DIG.27, 384/609, 54/7 |
| 917,319 | Breast-drill | 74/134, 74/366, 81/30, 81/33 |
| 939,042 | Gearing | 74/134, 74/366, 81/34 |
| 968,372 | Ball-bearing | 384/617 |
| 977,957 | Ratchet Mechanism for Screw-Drivers, &c. | 192/43.1, 74/127 |
| 979,939 | Spiral tool-driver | 74/127 |
| 982,510 | Ratchet mechanism | 192/43.1, 192/51, 411/964, 74/134, 74/378, 74/577R, 81/34 |
| 1,008,164 | Ratchet Screw-Driver | 81/60 |
| 1,015,235 | Gearing | 74/366, 74/545, 81/34 |
| 1,021,538 | Gearing | 74/366, 81/34 |
| 1,023,023 | Gearing | 74/127 |
| 1,033,712 | Chain Drill | 408/92 |
