| All Patents in class 408/171 |
Patents 1 -
10
of 12
      |
| Picture | Number | Date | Patentee | Title |
| | 265,272 | Oct. 03, 1882 | V. Moeslein | Expanding Reamer |
| | 282,685 | Aug. 07, 1883 | J. Thornton, Jr. | Expanding Reamer |
| | 572,037 | Nov. 24, 1896 | J.H. Voorhees | Steam Boiler Tube Cleaner |
| | 627,098 | Jun. 20, 1899 | W.D. Clugston | Expanding Tool Holder |
 | 849,738 | Apr. 09, 1907 | F.J. Lapointe | Reamer |
| | 1,127,121 | Feb. 02, 1915 | V.J. Wahlstrom | Expanding reamer |
| | 1,419,448 | Jun. 13, 1922 | C.E. Davis | Boring Head |
| | 1,745,660 | Feb. 04, 1930 | W.J. Denning | Expanding Arbor |
| | 1,956,364 | Apr. 24, 1934 | O. Severson | Expanding Boring Head |
 | 1,958,075 | May 08, 1934 | T. Thorsen, A. Storm | Means for adjusting the cutters of boring machines and the like |
