| Patents for Edward A. Allen |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 2,370,580 | Feb. 27, 1945 | E.A. Allen, R.S. Pyne | Cross-feed mechanism for grinding machines | grinders |
| 2,381,687 | Aug. 07, 1945 | E.A. Allen, R.S. Pyne | Drive for oscillating grinders | grinders |
| 2,412,937 | Dec. 24, 1946 | E.A. Allen | Boring head | boring heads |
| 2,416,996 | Mar. 04, 1947 | E.A. Allen, F.P. Healy | Boring bar guiding mechanism | vertical boring mills |
| 2,479,973 | Aug. 23, 1949 | E.A. Allen, F.P. Healy, J.Y. Scott | Chuck | valve and seat maintenance |
| 2,657,470 | Nov. 03, 1953 | F.P. Healy, E.A. Allen | Presetting device for boring tools | boring and turning machines |
| 3,060,812 | Oct. 30, 1962 | E.A. Allen, F.P. Healy | Milling machine | milling machines |
| 3,075,413 | Jan. 29, 1963 | E.A. Allen, F.P. Healy | Automotive Brake Drum Lathe | brake drum lathes |
