| All Patents in class 173/93 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 2,107,108 | Feb. 01, 1938 | J. De Mooy | Rotary Tool | pneumatic tools |
| 2,622,215 | Dec. 16, 1952 | J.L. Baillargeon, J.J. Piekarski | Impulse coupling | ignition systems |
| 2,707,892 | May 10, 1955 | M.P. Holmes | Impact-type Chuck Wrench | metal lathe accessories and attachments |
| 2,727,598 | Dec. 20, 1955 | F.A. Kaman, W.G. Mitchell | Impact wrench torque control | |
| 2,793,551 | May 28, 1957 | M.M. Ford | Rotatable Impact Tool Holder | tool holders |
| 3,214,940 | Nov. 02, 1965 | L. Kramer | Pneumatic impact wrench | |
| 3,214,941 | Nov. 02, 1965 | R.E. Shulters | Pneumatic impact wrench | |
| 3,789,896 | Feb. 05, 1974 | E. Cooke-Yarborough | Screw drivers and like tools | spiral screwdrivers |
| 5,038,869 | Aug. 13, 1991 | G.E. Olson | Fatigue-Resistant Spindle End | |
| 6,158,526 | Dec. 12, 2000 | R.D. DeRome, P.W. Griffin, A.P. Ghode | Reversible Impact Mechanism with Structure Limiting Hammer Travel | |
| 6,227,308 | May 08, 2001 | R.D. DeRome, P.W. Griffin, A.P. Ghode | Reversible Impact Mechanism with Structure Limiting Hammer Travel | |
