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US Patent: 517,821
Gas Engine
Patentees:
Jaques Labataille (exact or similar names) - San Francisco, CA
Justin J. Graff (exact or similar names) - San Francisco, CA

USPTO Classifications:
123/162

Tool Categories:
propulsion and energy : internal combustion engines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 22, 1893
Granted: Apr. 03, 1894

Patent Pictures:
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