| All Patents in class 74/820 |
Patents 1 -
10
of 25
      |
| Picture | Number | Date | Patentee | Title |
| | 632,906 | Sep. 12, 1899 | A. Swasey | Turret Operating Mechanism |
 | 665,054 | Jan. 01, 1901 | H. Bilgram | Gear-cutting machine |
 | 874,035 | Dec. 17, 1907 | G.G. Prentice | Multiple-spindle automatic turret-machine |
| | 1,047,270 | Dec. 17, 1912 | W.L. Miller | Turret Rotating, Centering, and Locking Mechanism for Turret Lathes |
| | 1,180,429 | Apr. 25, 1916 | C.A. Rich | Screw-Machine |
| | 1,455,282 | May 15, 1923 | E.P. Bullard, Jr. | Indexing Device |
| | 1,838,945 | Dec. 29, 1931 | A.M. Johnson | Automatic machine tool |
| | 1,925,384 | Sep. 05, 1933 | J.H. Hoern | Ring Resawing Machine |
| | 1,967,689 | Jul. 24, 1934 | A.M. Sosa, L.L. Schauer | Cam Controlled Mutispindle Machine |
 | 1,975,005 | Sep. 25, 1934 | E.J. Kingsbury, G. Swahnberg | Indexing and control mechanism for a metal working machine |
