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| All Patents in class 29/37A | |||||
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| Number | Date | Patentee | Title | Type | |
| 338,749 | Mar. 30, 1886 | N. Hunt | Lathe for Turning Spherical Surfaces | metal lathe accessories and attachments | |
| 2,496,995 | Feb. 07, 1950 | G. Gorton | Guide Collet | metalworking machine work holding | |