US Patent: 392,191
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| Gas Engine
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Patentee:
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| Henry T. Dawson (exact or similar names) - Salcombe, Devon County, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 15, 1887 |
| Granted: |
Nov. 06, 1888 |
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Joel Havens
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Description: |
| Patented in England, 20 Jun 1885, #7,920. |
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