| Patents for William A. Steel |
Patents 31 -
35
of 35
      |
| Number | Date | Patentee | Title | Type |
| 150,857 | May 12, 1874 | M.A. Furbush | Improvement in metal-drilling machines | drill presses |
| 153,401 | Jul. 21, 1874 | C. Van Haagen | Improvement in machines for sharpening twist-drills | drill grinders |
| 159,481 | Feb. 02, 1875 | C. Van Haagen | Improvement in Metal-Drilling Machines | drilling and boring |
| 164,512 | Jun. 15, 1875 | D. Baxter | Portable Forges | blacksmith |
| 178,209 | May 30, 1876 | C. Van Haagen | Mechanism For Reversing the Motion of the Beds of Metal Planing Machines | metal planers |
