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US Patent: 139,407
Improvement in Lubricators for Steam-Engines
Elijah McCoy - Ypsilanti, MI

USPTO Classifications:

Tool Categories:
propulsion and energy : steam engines : steam engine lubricators

Elijah McCoy - Ypsilanti, MI
Sullivan M. Cutcheon - Ypsilanti, MI
Edward P. Allen - Ypsilanti, MI

Not known to have been produced

S. M. Cutcheon
J. Bickford
John A. Ellis
G. Alexander

Patent Dates:
Applied: Apr. 02, 1873
Granted: May 27, 1873

Patent Pictures:
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Wikipedia biography of Elijah McCoy
The inventor was born in Canada to fugitive slaves from Kentucky. He moved to Scotland where he was certified as a mechanical engineer, and then rejoined his family who in the meantime had moved to Michigan.

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