| All Patents in class 408/152 |
Patents 1 -
10
of 12
      |
| Picture | Number | Date | Patentee | Title |
 | 9,562 | Jan. 25, 1853 | T. Prosser | Expanding drill |
 | 10,872 | May 02, 1854 | A. Weeks | Expansion-bit |
| | 130,880 | Aug. 27, 1872 | W.F. Strong | Improvement in Bolt Cutters |
 | 260,497 | Jul. 04, 1882 | W.L. Parmelee | Improvements in Expansion-Bits |
 | 273,874 | Mar. 13, 1883 | C.H. Miller | Attachment for Pipe Tongs or Wrenches |
 | 890,848 | Jun. 16, 1908 | E.S. Mummert, J.O. Dixon | Screw Threading Machine |
 | 1,097,096 | May 19, 1914 | H. Hunteman, H.H. Heuerman | Wrench |
 | 2,215,344 | Sep. 17, 1940 | A.P. Albrecht | Micro Dial |
| | 3,311,003 | Mar. 28, 1967 | J. Daugherty | Facing Head Attachment and Drive Mechanism Therefor |
 | 3,599,517 | Aug. 17, 1971 | J. Müller | Boring and facing head for machine tools |
