| All Patents in class 74/409 |
Patents 1 -
15
of 32
      |
| Number | Date | Patentee | Title | Type |
| 330,391 | Nov. 17, 1885 | A.T. Gifford | Milling-machine | milling machines |
| 1,107,731 | Aug. 18, 1914 | L.H. Vold | Means for Eliminating Vibrations in Rotary Shafts | metalworking power transmission |
| 1,723,852 | Aug. 06, 1929 | F.S. Haas | Grinding Machinery | grinding machines |
| 1,791,747 | Feb. 10, 1931 | J.B. Armitage | Machine-Tool Transmission | milling machines |
| 1,978,132 | Oct. 23, 1934 | F.S. Haas | Grinding Machine | grinding machines |
| 2,163,836 | Jun. 27, 1939 | F.S. Haas | Backlash-Eliminating Mechanism for Machine Tools | grinding machines |
| 2,195,911 | Apr. 02, 1940 | W.F. Zimmermann | Selective Worm Gear Table Drive | gear hobbing machines |
| 2,254,010 | Aug. 26, 1941 | R.D. Wortendyke, C. Herfurth | Grinding Machine | grinding machines |
| 2,267,696 | Dec. 23, 1941 | H.J. Siekmann, W.F. Groene | Blacklash Eliminator for Orbital Lathes | metalworking machine mechanisms |
| 2,302,575 | Nov. 17, 1942 | E.G. Roehm, M. Romaine | Backlash Eliminator for Spindle Drives | metalworking machine mechanisms |
| 2,339,102 | Jan. 11, 1944 | F.A. Parsons | Transmission and Control Mechanism | milling machines |
| 2,371,045 | Mar. 06, 1945 | G.H. Ekstrom, B.R. Granberg | Feed screw mechanism | |
| 2,682,941 | Jul. 06, 1954 | A.H. Hawley, Sr. | Machine Tool Transmission | metalworking power transmission |
| 2,769,349 | Nov. 06, 1956 | O.A. Costello | Disconnectable Worm Gearing | industrial machine gearing |
| 2,889,755 | Jun. 09, 1959 | W. Schroeder | Machine Tool Transmission | metalworking power transmission |
