| All Patents in class 74/820 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 632,906 | Sep. 12, 1899 | A. Swasey | Turret Operating Mechanism | metalworking machine mechanisms |
| 665,054 | Jan. 01, 1901 | H. Bilgram | Gear-cutting machine | gear making machines |
| 874,035 | Dec. 17, 1907 | G.G. Prentice | Multiple-spindle automatic turret-machine | turret lathes |
| 1,047,270 | Dec. 17, 1912 | W.L. Miller | Turret Rotating, Centering, and Locking Mechanism for Turret Lathes | turret lathes |
| 1,455,282 | May 15, 1923 | E.P. Bullard, Jr. | Indexing Device | metalworking machine mechanisms |
| 1,838,945 | Dec. 29, 1931 | A.M. Johnson | Automatic machine tool | nut or bolt making machines |
| 1,925,384 | Sep. 05, 1933 | J.H. Hoern | Ring Resawing Machine | metal cutting circular saws |
| 1,967,689 | Jul. 24, 1934 | A.M. Sosa, L.L. Schauer | Cam Controlled Mutispindle Machine | multiple spindle drill presses |
| 1,975,005 | Sep. 25, 1934 | E.J. Kingsbury, G. Swahnberg | Indexing and control mechanism for a metal working machine | metalworking machine mechanisms |
| 1,975,006 | Sep. 25, 1934 | E.J. Kingsbury, J.E. Anderson | Indexing and control mechanism for independent metal working units | metalworking machine mechanisms |
| 1,975,007 | Sep. 25, 1934 | E.J. Kingsbury | Turret-based multi-operation machine | metalworking machine mechanisms |
| 1,975,008 | Sep. 25, 1934 | E.J. Kingsbury | Machine tool having an indexing movement | metalworking machine mechanisms |
| 2,086,848 | Jul. 13, 1937 | E.P. Bullard | Lock Pin Assembly | |
| 2,086,849 | Jul. 13, 1937 | E.P. Bullard, E.H. Johnson | Carrier Mechanism | |
| 2,086,850 | Jul. 13, 1937 | E.P. Bullard | Binding Device | |
