| All Patents in class 72/169 |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| 146,329 | Jan. 13, 1874 | M.B. Flynn | Machines for Bending Tires | tire bending tools |
| 169,260 | Oct. 26, 1875 | J.W. Grover | Machines for Making Spring Washers | metal washer making machines |
| 216,254 | Jun. 10, 1879 | J.F. Bender | Tire Bending Machine | tire bending tools |
| 359,509 | Mar. 15, 1887 | H.B. Keiper | Tire Bender | blacksmith |
| 387,848 | Aug. 14, 1888 | J.F. Bender | Tire Bender | blacksmith |
| 406,984 | Jul. 16, 1889 | I.L. Anwerter | Tire Bender | tire bending tools |
| 408,685 | Aug. 13, 1889 | C.A. Bertsch | Bending Roll | metal bending machines |
| 510,764 | Dec. 12, 1893 | C.A. Bertsch | Metal Bending Machine | metal bending machines |
| 543,558 | Jul. 30, 1895 | E. Faller, C. Oberle | Pipe Forming Machine | sheet metal |
| 543,815 | Jul. 30, 1895 | W. Lewis, W. Sellers | Bending Rolls | |
| 877,038 | Jan. 21, 1908 | C.A. Bertsch | Bending Rolls | metal bending machines |
| 1,340,320 | May 18, 1920 | J.M. Brown | Crimped-elbow-bending machine | |
| 1,406,004 | Feb. 07, 1922 | P.R. Hahnemann | Metal Working Machine | thread rolling machines |
| 1,735,243 | Nov. 12, 1929 | P.R. Hahnemann | Slip Roll Forming Machine | sheet metal forming rolls |
| 1,742,654 | Jan. 07, 1930 | P.R. Hahnemann | Slip Rol Forming Machine | sheet metal forming rolls |
