| Patents for William Houghtaling |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 434,930 | Aug. 26, 1890 | W. Houghtaling | Lathe | turret lathes |
| 494,482 | Mar. 28, 1893 | W. Houghtaling | Attachment for Steam Indicators | steam engine indicators |
| 533,812 | Feb. 05, 1895 | W. Houghtaling | Steam Engine Indicator | steam engine indicators |
| 538,042 | Apr. 23, 1895 | W. Houghtaling | Steam Engine Indicator | steam engine indicators |
| 538,043 | Apr. 23, 1895 | W. Houghtaling | Steam Engine Indicator | steam engine indicators |
| 646,700 | Apr. 03, 1900 | W. Houghtaling | Steam Engine Indicator | steam engine indicators |
