| All Patents in class 409/78 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 191,826 | Jun. 12, 1877 | L. Bollmann | Machines for Cutting Screw Threads | metal threading machines |
| 882,290 | Mar. 17, 1908 | J. Bowen | Machine for Cutting Screws, &c. | screwcutting lathes |
| 893,431 | Jul. 14, 1908 | J. Bowen | Machine for Cuting Screw, & c. | screwcutting lathes |
| 1,235,437 | Jul. 31, 1917 | N.D. Chard | Feed-screw gage | metal lathes |
| 1,588,003 | Jun. 08, 1926 | B.H. Blood | Thread-hobbing machine | thread hobbing and thread milling machines |
| 1,794,361 | Mar. 03, 1931 | L.F. Nenninger, B.P. Graves, E.J. Kearney, J.B. Armitage | Milling-Machine Spindle and Tool | milling machine tools |
| 2,923,206 | Feb. 02, 1960 | M. Kovac | Indexing Attachment for Milling Machines and the Like | indexers and dividers |
