US Patent: 260,636
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| Saw-tooth
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Patentees:
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| Charles M. Emerson (exact or similar names) - Indianapolis, IN |
| George S. Black (exact or similar names) - Indianapolis, IN |
| Elias C. Atkins (exact or similar names) - Indianapolis, IN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 18, 1882 |
| Granted: |
Jul. 04, 1882 |
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Jeff Joslin
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