| All Patents in class 476/47 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 7,322 | Apr. 30, 1850 | H. Elliott | Gearing for Regulating Speed | industrial machine speed and direction changing mechanisms |
| 644,591 | Mar. 06, 1900 | W.P. Freeman | Electric drill, &c. | drill presses |
| 700,647 | May 20, 1902 | J. Hartness | Power Transmission Mechanism | metalworking machine clutches |
| 2,297,078 | Sep. 29, 1942 | F.W. Schlichter | Drill press | drill presses |
| 2,423,323 | Jul. 01, 1947 | J.T. Janette | Variable-speed transmission | industrial machine gearing |
| 2,961,899 | Nov. 29, 1960 | J.E. Grove, W.W. De Lano | Drilling machine | drill presses |
