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| Patents for Charles J. Schmidt | |||||
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| Number | Date | Patentee | Title | Type | |
| 894,634 | Jul. 28, 1908 | F. Hardinge | Lathe | metal lathes | |
| 894,635 | Jul. 28, 1908 | F. Hardinge | Lathe | metal lathes | |
| 895,456 | Aug. 11, 1908 | F. Hardinge | Attachment for phonographic machines | ||
| 900,531 | Oct. 06, 1908 | F. Hardinge | Lens measuring instrument | ||
| 908,664 | Jan. 05, 1909 | F. Hardinge | Lathe structure | ||
| 928,045 | Jul. 13, 1909 | F. Hardinge | Controlling mechanism for lathe structures or the like | metal lathes | |
| 943,825 | Dec. 21, 1909 | F. Hardinge | Receptacle | ||