| All Patents in class 173/118 |
Patents 16 -
22
of 22
      |
| Number | Date | Patentee | Title | Type |
| 1,052,823 | Feb. 11, 1913 | A.M. Irvine | Power Actuated Hand Tool | riveting tools |
| 1,062,799 | May 27, 1913 | G.H. Rowe | Rock drill | miner |
| 1,282,928 | Oct. 29, 1918 | R.S. Peirce | Drill | |
| 1,598,088 | Aug. 31, 1926 | J. Larocca, J.S. Knowlson | Mechanical movement | impact chisels and drills |
| 1,598,090 | Aug. 31, 1926 | J. Larocca | Impacting tool | impact chisels and drills |
| 1,725,212 | Aug. 20, 1929 | F. Schneider | Power hammer | |
| 2,271,933 | Feb. 03, 1942 | G.D. Behlen | Power hammer | handheld power tools |
