| All Patents in class 72/123 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
| | 12,669 | Apr. 10, 1855 | S.M. Cate | Die and Stock for Ornamenting Metal Tubes |
| | 213,321 | Mar. 18, 1879 | D. Bushor | Tube-Expander |
| | 296,439 | Apr. 08, 1884 | W.T. Nicholson | Machine for Forming Teeth Upon File Blanks |
| | 390,899 | Oct. 09, 1888 | C.D. Wainwright, R.F. Pratt | Machine for Corrugating Wrought Metal Tubes |
| | 439,496 | Oct. 28, 1890 | B.B. Farris | Boiler Flue Beader |
| | 933,981 | Sep. 14, 1909 | P.J. Havey | Metal Working Machine |
| | 2,040,761 | May 12, 1936 | A. Rothschmitt | Spherical Boring Head |
