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1867-04 lincoln patent US64117-0R
Summary
W.E. Lincoln's U.S. Patent No. 6,4117 of Apr. 23, 1867
Public domain photograph of electrical equipment, power lines, engine, free to use, no copyright restrictions image - Picryl description
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Tags
Date
23/04/1867
Source
Wikimedia Commons
Link
Copyright info
public domain