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| All Patents in class 279/19.7 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,481,641 | Jan. 22, 1924 | F.A. Jimerson | Tie-tamper front-end construction | pneumatic tools | |
| 1,481,643 | Jan. 22, 1924 | F.A. Jimerson | Percussive-tool front-end construction | impact riveters | |