US Patent: 414,173
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| Combined Gas and Compressed Air Engine
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Patentee:
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| Emanuel Stevens (exact or similar names) - Brussels, Belgium |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 06, 1888 |
| Granted: |
Oct. 29, 1889 |
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Joel Havens
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Description: |
| Patented in Belgium, 16 Mar 1887, #76,731; in England, 31 Mar 1887, #4,843; in France, 15 Sept 1887, #185,874 and in Germany, 07 Oct 1887, #43,059. |
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