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| All Patents in class 409/194 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,601,811 | Jul. 01, 1952 | F.R. Swanson, W.S. Swanson, R.E. Wiley | Machine tool | ||
| 2,749,811 | Jun. 12, 1956 | J.J. Lenert, O.W. Barker | Transfer Machines | milling machines | |
| 3,018,696 | Jan. 30, 1962 | L.A. Attermeyer | Keyway Cutting Machine | keyway cutting machines | |
| 3,329,066 | Jul. 04, 1967 | D.B. Wood, III | Spindle Torque Amplifier | metalworking machine mechanisms | |
| 4,075,753 | Feb. 28, 1978 | K.T. Kuck, N.V. Gusching | Plural slide machine | ||