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| All Patents in class 173/168 | |||||
| Number | Date | Patentee | Title | Type | |
| 836,778 | Nov. 27, 1906 | A.J. Patch | Pneumatic Hammer | pneumatic tools | |
| 1,090,603 | Mar. 17, 1914 | E.I. Dodds | Portable pneumatic tool | pneumatic tools | |
| 6,155,354 | Dec. 05, 2000 | J.R. Brehm, D.S. Pusateri | Interchangeable Grips for Power Hand Tools | ||