US Patent: 749,821
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| Drilling-machine
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Patentee:
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| Theodore C. Hansen (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 26, 1902 |
| Granted: |
Jan. 19, 1904 |
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Jeff Joslin
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Description: |
| "My invention relates to drilling-machines, and particularly to drills adapted to bore a series of sets of holes for the pins on piano-bridges and for similar purposes in which it is desired to bore a number of sets of equidistant holes with two or more holes in each set on the same line with each other and with the sets of holes parallel to each other." |
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