US Patent: 543,625
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| Machine for boring joists for electric wiring
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Patentees:
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| Robert H. Henderson (exact or similar names) - Chicago, IL |
| John G. Henderson (exact or similar names) - Chicago, IL |
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Patent Dates:
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| Applied: |
Oct. 03, 1894 |
| Granted: |
Jul. 30, 1895 |
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Patent Pictures:
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1 | 2
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USPTO (New site tip) Google Patents
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Jeff Joslin
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Description: |
| "Henderson's Patent Joint Boring Machine" and the similar "Henderson's Patent Universal Hand Boring Machine" were sold by Chicago hardware retailer H. Channon Co. We found some data points showing that it was manufactured by the Henderson Electric Co., of Ampere, NJ. |
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