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US Patent: 504,723
Hydrocarbon Engine
Patentee:
Alexander Gray (exact or similar names) - London, Middlesex County, England

USPTO Classifications:
123/531, 123/555, 261/40, 261/76, 261/78.1

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 24, 1891
Granted: Sep. 12, 1893

Patent Pictures:
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Description:
Patented in England, 06 Jan 1891, #191; in France, 09 Nov 1891, #217,298 and in Germany, 13 Nov 1891, #64,339.

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