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US Patent: 35,068
Steam-engine
Patentee:
John F. Allen (exact or similar names) - New York, NY

USPTO Classifications:
137/625.25

Tool Categories:
propulsion and energy : steam engines

Assignees:
None

Manufacturer:
Porter-Allen Engine Co. - New York, NY

Witnesses:
Horace Andrews
Charles B. Richards

Patent Dates:
Granted: Apr. 29, 1862

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Porter-Allen Engine Co.
Description:
The inventor was partner in the important innovator in high-speed steam engines, the Porter-Allen Engine Co.

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