Free trailer · US 743,801
Your patent, in lights.
U.S. PATENT · November 10, 1903743,801
↖ this is where it all startedNow showingWindow-Cleaning DeviceMary Anderson
GRANTEDNOVEMBER 10 1903
PATENTFILM
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Drawings come straight from the public USPTO record. This trailer is a free preview; the film is where we explain what your invention does, claim by claim, in plain English.