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US Patent: 190,490
Hot Air Engine
Patentees:
Julius Hock (exact or similar names) - Vienna, Austria
Louis P. Martin (exact or similar names) - Vienna, Austria

USPTO Classifications:
60/39.23

Tool Categories:
propulsion and energy : external combustion engines : hot air engines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Sep. 09, 1876
Granted: May 08, 1877

Patent Pictures:
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