US Patent: 963,986
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| Combination drill and valve-grinder
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Patentee:
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| Frederick C. Blanchard (exact or similar names) - Bridgeport, CT |
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Patent Dates:
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| Applied: |
Jan. 20, 1910 |
| Granted: |
Jul. 12, 1910 |
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Patent Pictures:
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1 | 2
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Blanchard 963,986; patent drawing's images rearranged |
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George Langford
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Description: |
| Blanchard describes his invention as a combination breast drill, reversible ratchet drill and valve grinder. I have one of these combo drills. It is the smoothest operating breast drill I have. |
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