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| Patents for E. M. Boynton | |||||
| Number | Date | Patentee | Title | Type | |
| 96,066 | Oct. 19, 1869 | E.A. White | Grinding Metal Plates | surface grinders | |
| 180,986 | Aug. 15, 1876 | A. Boynton | Improvement in saw-teeth | saw teeth | |