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Patents & Inventions
R 1,221
Panati's Extraordinary Origins of Everyday Things
R 1,008
Great American Inventions
R 1,007
Applied Minds: How Engineers Think
R 2,330
Tesla: Inventor of the Electrical Age
R 1,252
Apprentice to Genius: The Making of a Scientific Dynasty
R 1,412
Before the Hon. Philip F. Thomas, Commissioner of Patents, in the Matter of the Application of Elias Howe, Jr., For an Extension of His Patent for Sewing Machines (Classic Reprint)
R 1,083
Philadelphia's 1876 Centennial Exhibition (PA) (Images of America)
R 2,001
Tech Trends in Practice: The 25 Technologies that are Driving the 4th Industrial Revolution
R 1,596
Machines A Visual History: 100 Machines and the Remarkable Stories Behind Each Invention
R 945
Hardcore Inventing: Invent, Protect, Promote, and Profit From Your Inventions
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