US Patent: 4,499X
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| Improvement on steam generator patented Nov 18 1825
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Patentee:
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| Stephen T. Conn (exact or similar names) - Georgetown, DC |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jul. 20, 1826 |
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Joel Havens
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Description: |
| This probbly is an improvement on patent #4277X which was issued on 29 Nov 1825.
Only about 2000 of the almost 10000 X-patent documents were recovered.
Because of the Patent Office fire in Dec. 1836, little is known about this patent. There are no patent drawings available. This patent is in the database for reference only. |
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