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Link
Via Popular Science
Tuesday, February 16, 2016
Free Coloring Book Of Weird Patents
The National Archives of the United States has released a coloring book full of weird and wonderful patents. The patents range for chicken goggles to a hat that automatically salutes to the landing craft used in D-Day. It’s available now as a 17 page free PDF.
Link
Via Popular Science
Link
Via Popular Science
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