| All Patents in class 408/203 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
 | 488 | Nov. 25, 1837 | J. Hinds | Boring gage |
 | 12,598 | Mar. 27, 1855 | U. Kimble | Tool for Boring Hubs to Receive Boxes |
 | 64,581 | May 07, 1867 | J.G. Schmidt | Improvement in machines for cutting bungs |
| | 206,920 | Aug. 13, 1878 | E.P. Baville | Screw Cutting Stock and Tool |
| | 1,055,013 | Mar. 04, 1913 | J. Gunzenhauser, W. Bennington | Portable Milling Tool |
 | 1,988,046 | Jan. 15, 1935 | L. Nikoloff | Thread cutting die |
| | 2,416,996 | Mar. 04, 1947 | E.A. Allen, F.P. Healy | Boring bar guiding mechanism |
