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Patents for David D. Pettigrew
Patents 1 - 11 of 11
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,830,628Apr. 15, 1958Y. Tu, D.D. PettigrewMulti-speed drive for band saws and the likebandsaws
2,866,348Dec. 30, 1958D.D. Pettigrew, E.C. WarrickShifter for power transmissionmetal lathes
2,876,669Mar. 10, 1959D.D. PettigrewMicrometer stops for machine toolsmetalworking machine mechanisms
2,885,897May 12, 1959D.D. PettigrewLathe drivemetal lathes
2,887,924May 26, 1959D.D. Pettigrew, J. SimonelliCross slide threading stopmetal lathes
CA-585,901Oct. 27, 1959D.D. Pettigrew, Y. TuMulti-speed drivemetal cutting bandsaws
2,947,197Aug. 02, 1960D.E. Bell, D.D. PettigrewGuards for machine toolsdrill presses
2,970,495Feb. 07, 1961D.D. PettigrewWork Rests for Lathes and the Likemetal lathe accessories and attachments
3,118,325Jan. 21, 1964D.D. PettigrewCombined manual and power feed for drill pressdrill presses
3,146,628Sep. 01, 1964J.H. Diehl, E.C. Warrick, D.D. PettigrewPower tool and transmission therefordrill presses
3,156,127Nov. 10, 1964D.D. PettigrewVibration reducing device and methodmetalworking power transmission
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