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| All Patents in class 173/132 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,282,928 | Oct. 29, 1918 | R.S. Peirce | Drill | ||
| 1,853,128 | Apr. 12, 1932 | K.A. Johanson, E.G. Hysing | Tool Holder Adapted for Motor Driven Striking Tools | ||
| 2,561,577 | Jul. 24, 1951 | R.G. Knudsen | Pneumatic Impact Pullers and the Like | ||