| All Patents in class 173/211 |
Patents 1 -
5
of 5
      |
| Picture | Number | Date | Patentee | Title |
 | 1,446,547 | Feb. 27, 1923 | J.M. Crowe | Valve for pneumatic tools |
 | 2,263,423 | Nov. 18, 1941 | W.J. Kattrein | Sheet Metal Smoothing Machine |
 | 3,783,970 | Jan. 08, 1974 | I.R. Danielson | Sound Attenuating device for a work steel or the like |
| | 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 |
