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US Patent: 374,663
Compensating Gear for Road Engines
Patentee:
John Galbraith Downie (exact or similar names) - Philadelphia, PA

USPTO Classifications:
475/252

Tool Categories:
propulsion and energy : steam apparatus : steam traction engines : traction engine propulsion components

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Oct. 07, 1887
Granted: Dec. 13, 1887

Patent Pictures:
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