| All Patents in class 29/43 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 407,537 | Jul. 23, 1889 | G. Landmann | Machine for Making Screws | screw machines |
| 469,201 | Feb. 16, 1892 | J.B. Clyne | Machine for Making Screws | screw machines |
| 554,814 | Feb. 18, 1896 | J.B. Clyne | Machine for Making Screws Nipples, &c. | screw machines |
| 574,162 | Dec. 29, 1896 | G.G. Prentice | Multiple Screw Machine | screw machines |
| 578,777 | Mar. 16, 1897 | F. Schultze | Screw Machine | screw machines |
| 633,419 | Sep. 19, 1899 | J. Brockie | Automatic Lathe | automatic lathes |
| 1,197,541 | Sep. 05, 1916 | J.C. Potter | Automatic turret-lathe | turret lathes |
| 1,967,689 | Jul. 24, 1934 | A.M. Sosa, L.L. Schauer | Cam Controlled Mutispindle Machine | multiple spindle drill presses |
| 2,300,389 | Oct. 27, 1942 | H.W. Ruppel | Coolant control and lock for spindle turrets | turret lathes |
| 2,348,364 | May 09, 1944 | H.W. Ruppel | Turret actuating mechanism | turret lathes |
| 2,357,428 | Sep. 05, 1944 | H.W. Ruppel | Automatic screw machine | screw machines |
| 2,669,005 | Feb. 16, 1954 | C.E. Miller | Single Spindle Automatic Lathe | automatic lathes |
| 2,728,974 | Jan. 03, 1956 | C.E. Miller | Automatic Lathe | automatic lathes |
