| All Patents in class 451/47 |
Patents 16 -
22
of 22
      |
| Number | Date | Patentee | Title | Type |
| 2,392,819 | Jan. 15, 1946 | S.G. Brady, I.J. Gruenberg | Gear Grinding Machine | gear grinding machines |
| 2,607,175 | Aug. 19, 1952 | J.J. Osplack | Method of making precision gears | gear hobbing machines |
| 2,672,713 | Mar. 23, 1954 | S.G. Brady | Apparatus for Fashoning Rotary Members Having Angularly Spaced Portions of Like Peripheral Contour | gear grinding machines |
| 2,981,037 | Apr. 25, 1961 | C.J. Terp | Workholder and method for internal grinding | grinders |
| 3,252,358 | May 24, 1966 | A.D. Moncrieff | Indexing Mechanism | indexers and dividers |
| 3,685,393 | Aug. 22, 1972 | R.M. Bell | Device for smoothing irregularities | |
| 7,651,383 | Jan. 26, 2010 | H.J. Stadfeld | Method of Lapping Gears | gear making machines |
