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| All Patents in class 318/374 | |||||
| Number | Date | Patentee | Title | Type | |
| 1,949,727 | Mar. 06, 1934 | J.D. Nies | Electric brake for slip-ring motors | ||
| 2,042,379 | May 26, 1936 | P.R. Guirl, J.S. Barnes | Metal Working Apparatus | metalworking machine mechanisms | |
| 2,336,849 | Dec. 14, 1943 | G. Davenport | Cutter Stop for Machine Tools | gear hobbing machines | |