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| All Patents of Type: corner braces | |||||
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| Number | Date | Patentee | Title | Type | |
| 17,891 | Jul. 28, 1857 | C.C. Plaisted | Bit, brace, for boring obliquely to the axis of the stock | corner braces | |
| 18,282 | Sep. 29, 1857 | B.B. Hill | Bit-holder | corner braces | |
| 19,028 | Jan. 05, 1858 | B.B. Hill, S.W. Adams | Bit-holder | corner braces | |
| 32,618 | Jun. 25, 1861 | J.F. Cory | Bit stock with double universal joint | corner braces | |
| 682,263 | Sep. 10, 1901 | C.S. Du Mont | Bit-brace | corner braces | |