| Patents for David D. Pettigrew |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 2,830,628 | Apr. 15, 1958 | D.D. Pettigrew, Y. Tu | Multi-speed drive for band saws and the like | bandsaws |
| 2,866,348 | Dec. 30, 1958 | D.D. Pettigrew, E.C. Warrick | Shifter for power transmission | metal lathes |
| 2,876,669 | Mar. 10, 1959 | D.D. Pettigrew | Micrometer stops for machine tools | metalworking machine mechanisms |
| 2,885,897 | May 12, 1959 | D.D. Pettigrew | Lathe drive | metal lathes |
| 2,887,924 | May 26, 1959 | D.D. Pettigrew, J. Simonelli | Cross slide threading stop | metal lathes |
| CA-585,901 | Oct. 27, 1959 | D.D. Pettigrew, Y. Tu | Multi-speed drive | metal cutting bandsaws |
| 2,947,197 | Aug. 02, 1960 | D.E. Bell, D.D. Pettigrew | Guards for machine tools | drill presses |
| 2,970,495 | Feb. 07, 1961 | D.D. Pettigrew | Work Rests for Lathes and the Like | metal lathe accessories and attachments |
| 3,118,325 | Jan. 21, 1964 | D.D. Pettigrew | Combined manual and power feed for drill press | drill presses |
| 3,146,628 | Sep. 01, 1964 | J.H. Diehl, E.C. Warrick, D.D. Pettigrew | Power tool and transmission therefor | drill presses |
| 3,156,127 | Nov. 10, 1964 | D.D. Pettigrew | Vibration reducing device and method | metalworking power transmission |
