| Patents for Roger S. Pyne |
Patents 1 -
9
of 9
      |
| Number | Title | Classification(s) |
| 2,036,656 | Valve seat cutter | 125/5, 407/32, 408/227, 76/115 |
| 2,149,409 | Oscillating grinder | 451/1, 451/17, 451/18, 451/227 |
| 2,334,581 | Cross-feed for grinding machines | 451/15 |
| 2,370,580 | Cross-feed mechanism for grinding machines | 29/64, 451/64, 475/12, 475/4, 82/132 |
| 2,381,687 | Drive for oscillating grinders | 157/13, 451/121, 451/227, 74/82 |
| 2,413,068 | Diaphragm chuck | 279/141, 279/156, 279/2.05, 279/2.11, 451/398 |
| 2,584,499 | Apparatus for precision bore grinding | 451/22, 451/227 |
| 2,727,339 | Grinding wheel feed for grinding machines | 451/221 |
| 2,897,636 | Work rest for a centerless grinder | 451/244, 451/407 |
