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| All Patents in class 409/289 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,572,978 | Feb. 16, 1926 | H.W. Watson | Tool Operating Attachment for Planers or Shapers | metal planer accessories | |
| 2,154,718 | Apr. 18, 1939 | T.W. Bannon | Duplicating Machine | metal shapers | |
| 2,202,767 | May 28, 1940 | A. Trosch | Planer | metal planers | |
| 3,136,936 | Jun. 09, 1964 | R.H. Eisengrein | Machine Tool Control System | machine tool controls | |
| 3,189,994 | Jun. 22, 1965 | G.H. Jones | Method and Apparatus for Machining Nozzle Clusters and the Like | vertical boring mills | |