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| Patents for Forstner, Sharp & Co. | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 155,148 | Sep. 22, 1874 | B. Forstner | Forstner Bit | |
![]() | 280,026 | Jun. 26, 1883 | B. Forstner | Shell Type Bit with Recessed Lip | |