| All Patents in class 408/21 |
Patents 1 -
10
of 14
      |
| Picture | Number | Date | Patentee | Title |
 | 3,872 | Dec. 31, 1844 | R.S. Hannaford, R.H. Penny, W.F. Converse | Machinery for Cutting Screws in the Posts and On the Rails of Bedsteads |
 | 143,273 | Sep. 30, 1873 | W.D. Chase | Machine for Cutting and Threading Pipes, &c. |
 | 146,118 | Dec. 30, 1873 | J.B. Wright | Improvement in scroll-saws |
 | 319,502 | Jun. 09, 1885 | G.G. Morrison | Combined Drilling and Boring Machine |
| | 359,375 | Mar. 15, 1887 | G.F. Ballou | Drilling Fixture for Lathes |
| | 428,703 | May 27, 1890 | F.W. Taylor | Boring Bar Puppet |
| | 511,829 | Jan. 02, 1894 | G.E. Witherell | Turret Tool Machine |
| | 670,672 | Mar. 26, 1901 | G.W. Hoadley | Combination Metal and Wood Working Machine |
| | 838,827 | Dec. 18, 1906 | J.S. Waugh | Portable door-mortising machine |
 | 1,515,620 | Nov. 18, 1924 | W.S. Runnels | Drilling and routing machine |
