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Patents for Daniel Powers | |||||
Number | Date | Patentee | Title | Type | |
124,089 | Feb. 27, 1872 | H.S. Shepardson | Improvement in bits | drill bits | |
191,815 | Jun. 12, 1877 | D. Powers | Bit-stock with gear-train multiplier | geared braces | |
212,110 | Feb. 11, 1879 | D. Powers, O. Peck | Improvement in bit-stocks | brace chucks | |
219,872 | Sep. 23, 1879 | O. Peck | Improvement in bit-stocks | brace chucks |