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| All Patents in class 409/146 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,034,265 | May 15, 1962 | J. Decker | Grinding Machine Rapid Advance Motor | grinding attachments | |
| 3,119,307 | Jan. 28, 1964 | H.B. Opferkuch | Automatic Backlash Eliminator | milling machines | |
| 3,159,083 | Dec. 01, 1964 | M.E. Berchtold, P.F. Olton | Automatic Control Mechanism for a Machine Tool | machine tool controls | |
| 3,182,521 | May 11, 1965 | L.A. Attermeyer | Support Mechanism for Movable Machine Tool Member | metalworking machine mechanisms | |