| All Patents in class 409/204 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 10,412 | Jan. 10, 1854 | W.G. Merrell | Machine for cutting ellipses | wood lathes |
| 100,891 | Mar. 15, 1870 | H.H. Heskett | Improved Lathe for Setting Jewels in Time-Pieces | watchmakers lathes |
| 174,228 | Feb. 29, 1876 | E.W. Gillman | Improvement in machines for finishing barrels | barrel making machines |
| 430,088 | Jun. 10, 1890 | G.T. Reiss | Lathe | metal lathes |
| 469,323 | Feb. 23, 1892 | J.E. Titus, E.L. Bowers | Slotting-machine | metal slotting machines |
| 905,084 | Nov. 24, 1908 | E.J. Lees | Cutter Head for Gear Cutting Machines | gear making machines |
| 1,718,275 | Jun. 25, 1929 | R.L. Carter | Combined router and work support | routing machines |
| 2,685,122 | Aug. 03, 1954 | C.W. Berthiez | Turret-Head for Machine-Tools with Rotating Spindle such as Milling and Boring Machines and the Like | milling machine accessories |
| 2,705,441 | Apr. 05, 1955 | J.O. Armstrong | Hold-Down Clamp | clamps |
| 2,710,934 | Jun. 14, 1955 | J.A. Senn | Motor Controlled Machine Tool Positioning Mechanism | milling machines |
| 2,712,273 | Jul. 05, 1955 | E.R. Rusnok | Mill head | vertical boring mills |
| 2,773,968 | Dec. 11, 1956 | J.W. Evans, M.E. Martellotti | Electro Discharge Machine | electrical discharge machining |
| 2,817,902 | Dec. 31, 1957 | E.L. Allman, Sr. | Adjustable Tool Holder | metalworking machine tool holders |
| 2,875,629 | Mar. 03, 1959 | J.E. Poorman | Adjustable Off-Center Drill Holder | drill press chucks |
| 3,013,473 | Dec. 19, 1961 | S.C. Straus | Swivel Head for Milling Machines | milling machines |
