| Patents for P. H. Truman |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 938,708 | Nov. 02, 1909 | G.H. Rowe | Stamp mill | ore processing apparatus |
| 938,709 | Nov. 02, 1909 | G.H. Rowe | Electromechanical device | impact riveters |
| 973,216 | Oct. 18, 1910 | G.H. Rowe | Electromechanical device | impact riveters |
| 1,024,025 | Apr. 23, 1912 | G.H. Rowe | Percussion device | impact chisels and drills |
| 1,024,026 | Apr. 23, 1912 | G.H. Rowe | Electromechanical device | impact chisels and drills |
| 1,024,027 | Apr. 23, 1912 | G.H. Rowe | Electromechanical device | power hammers |
| 1,062,799 | May 27, 1913 | G.H. Rowe | Rock drill | miner |
