US Patent: 456,505
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| Gas or Vapor Engine
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Patentees:
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| Arthur Rollason (exact or similar names) - Sandiacre, Derbyshire County, England |
| John Henry Hamilton (exact or similar names) - Sandiacre, Derbyshire County, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 26, 1891 |
| Granted: |
Jul. 21, 1891 |
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Joel Havens
"Vintage Machinery" entry for Electric Manufacturing & Gas Engine Co.
"Vintage Machinery" entry for Wells Brothers Ltd.
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Description: |
| Patented in England, 18 Oct 1889, #16,434. |
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