US Patent: 663,976
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| Lubricator
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Patentee:
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| Elijah McCoy (exact or similar names) - Detroit, Wayne County, MI |
| Assignees: |
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John Trix - Detroit, Wayne County, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 05, 1900 |
| Granted: |
Dec. 18, 1900 |
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Joel Havens
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Description: |
| The inventor was born in Canada to fugitive slaves from Kentucky. He moved to Scotland where he was certified as a mechanical engineer, and then rejoined his family who in the meantime had moved to Michigan.
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