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