US Patent: 400,928
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| Drill-brace
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Patentee:
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| Thomas C. Massey (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 04, 1888 |
| Granted: |
Apr. 09, 1889 |
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Kirk Eppler
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Description: |
| Improvements to patent 376,757, granted to James L. Shorrock. |
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