Inventions in the Century
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William Henry Doolittle
(5 Sterne; 1 Bewertungen)
The author was an Expert and Patent Solicitor, Ex-Examiner in the Patent Office and Assistant
Commissioner of Patents at Washington, Writer of Inventions, etc. He put together this collection to illustrate a period of remarkable advances in technology across the board. - Summary by LynneT (15 hr 27 min)