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| All Patents in class 409/128 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,086,153 | Jul. 06, 1937 | C.A. Bickel | Apparatus for Control of Machine Tools | machine tool controls | |
| 2,622,485 | Dec. 23, 1952 | M.E. Martellotti | Automatic Line Tracking Machine | profiling machines | |
| 2,853,626 | Sep. 23, 1958 | T.A. Wetzel | Automatic Copying Machine with Anticipator Control | milling machines | |