| Patents for H. R. Sullivan |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| 908,142 | Dec. 29, 1908 | P.H. Root | Lawn Mower Grinder | tool grinders |
| 930,472 | Aug. 10, 1909 | F.I. Harding | Valve Grinder | valve grinding tools |
| 950,560 | Mar. 01, 1910 | P.H. Root | Lawn Mower Grinder | tool grinders |
| 965,402 | Jul. 26, 1910 | H.W. Oster | Threading-machine | pipe threading machines |
| 965,404 | Jul. 26, 1910 | H.W. Oster | Die-stock | taps and dies |
| 966,217 | Aug. 02, 1910 | F.W. King | Electric drill | drill presses |
| 977,539 | Dec. 06, 1910 | H.W. Oster | Die-stock for cutting tapered threads | taps and dies |
| 979,789 | Dec. 27, 1910 | H.W. Oster | Die-stock | taps and dies |
| 979,790 | Dec. 27, 1910 | H.W. Oster | Die-stock | taps and dies |
| 999,272 | Aug. 01, 1911 | C.W. Stover | Pipe Wrench | pipe wrenches |
| 1,044,808 | Nov. 19, 1912 | H.W. Oster | Die-stock | taps and dies |
| 1,044,809 | Nov. 19, 1912 | H.W. Oster | Die-stock | taps and dies |
| 1,044,810 | Nov. 19, 1912 | H.W. Oster | Die-stock | taps and dies |
| 1,047,280 | Dec. 17, 1912 | H.W. Oster | Thread-cutting mechanism | pipe threading machines |
| 1,075,059 | Oct. 07, 1913 | H.W. Oster | Geared die-stock | pipe threading machines |
