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US Patent: 16,937
Steam Plow
Patentee:
David B. Spencer (exact or similar names) - Parkersburg, Wood County, VA

USPTO Classifications:
172/292, 180/210, 180/36, 180/39, 280/7

Tool Categories:
propulsion and energy : steam apparatus : steam plows

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. B. Stoughton
Thomas H. Upperman
Patent Dates:
Granted: Mar. 31, 1857

Patent Pictures: [ 1 | 2 ]
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