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| All Patents in class 409/174 | |||||
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| Number | Date | Patentee | Title | Type | |
| 234,635 | Nov. 16, 1880 | L. Wenchel | Apparatus for Turning Cutters for Molding Machines | metal lathe accessories and attachments | |
| 540,074 | May 28, 1895 | H.G. Shepard | Machine for recessing wheel-rims | wheelwright | |
| 2,273,399 | Feb. 17, 1942 | C.B. De Vlieg | Machine tool | milling machines | |
| 4,512,068 | Apr. 23, 1985 | T.W. Piotrowski | Pallet Receiver with Compliant Pin and Socket Registration | workpiece changers and storage mechanisms | |