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US Patent: 91,239
Hot Air Engine
Patentee:
Wilhelm Lehmann (exact or similar names) - Nuremburg, Bavaria, Germany

USPTO Classifications:
60/521

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

Assignees:
Wilhelm Lehmann - Nuremburg, Bavaria, Germany
Stehn & Wulfing - New York, NY

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Jun. 15, 1869

Patent Pictures:
USPTO (New site tip)
Google Patents
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