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US Patent: 66,972
Compound Steam Engine
Patentee:
John L. Lay - Buffalo, NY

USPTO Classifications:
123/58.2, 92/152

Tool Categories:
propulsion and energy : steam engines

Assignees:
John L. Lay - Buffalo, NY
H. O. Perry - Buffalo, NY

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Jul. 23, 1867

Patent Pictures:
USPTO pdf tiff
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