US Patent: 511,661
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| Gas and Oil Motor Engine
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Patentee:
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| Carl Stein (exact or similar names) - Cologne-Deutz, Germany |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 26, 1893 |
| Granted: |
Dec. 26, 1893 |
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Joel Havens
"Vintage Machinery" entry for Otto Gas Engine Works
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Description: |
| Patented in England, 08 May 1893, #9,181; in Belgium, 25 May 1892, #104,812; in Switzerland, 26 May 1893, #6,726 and in Italy, 10 Jun 1893, #LXVII 54. |
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