| Patents for William A. Steel |
Patents 16 -
30
of 31
      |
| Number | Date | Patentee | Title | Type |
| 133,192 | Nov. 19, 1872 | H. Bilgram | Improvement in steam-engine governors | steam engine governors |
| 134,296 | Dec. 24, 1872 | G.W. Libbey | Grinding Machines | grinding machines |
| 135,337 | Jan. 28, 1873 | L. Houston | Improvement in mortising machines | mortising machines |
| 136,794 | Mar. 11, 1873 | C. Van Haagen | Slide Rests for Lathes | metal lathes |
| 139,148 | May 20, 1873 | J. Harvey | Improvement in machines for bending pipe-stems | wood bending machines |
| 140,925 | Jul. 15, 1873 | J.C. Keller | Improvement in metal-drilling machines | drill presses |
| 140,938 | Jul. 15, 1873 | M.L. Orum, C.H. Mellor | Improvement in rotary cutters | cutters |
| 142,493 | Sep. 02, 1873 | F.B. Miles | Planing Machines | metal planers |
| 142,694 | Sep. 09, 1873 | F.E. Hahn | Improvement in boring-mills | vertical boring mills |
| 143,667 | Oct. 14, 1873 | G.W. Carr | Corn Huskers | corn huskers |
| 148,652 | Mar. 17, 1874 | D.C. Baxter | Forges | blacksmith |
| 148,748 | Mar. 17, 1874 | G.H. Perkins | Machine for Stamping and Bending Sheet Metal | stamping presses |
| 150,857 | May 12, 1874 | M.A. Furbush | Improvement in metal-drilling machines | drill presses |
| 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 |
