US Patent: 662,181
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| Gas Engine
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Patentees:
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| George J. Altham (exact or similar names) - Fall River, Bristol County, MA |
| John Beattie, Jr. (exact or similar names) - Fall River, Bristol County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 17, 1900 |
| Granted: |
Nov. 20, 1900 |
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Joel Havens
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Description: |
| Claim:
A valveless gas-engine having a continuously open duct connecting one end of the cylinder with the atmosphere. |
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