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| All Patents in class 173/18 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,329,571 | Feb. 03, 1920 | A.G. Adair | Nut Turning Tool | pneumatic tools | |
| 2,031,535 | Feb. 18, 1936 | E. Kiecksee | Ram | handheld power hammers | |
| 2,561,093 | Jul. 17, 1951 | V.W. Breitenstein, E.R. Boddinghouse | Internal-combustion rammer | handheld power tools | |
| 3,939,925 | Feb. 24, 1976 | I.R. Danielson | Throttle valve construction for percussion tool | ||