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U.S. patent applications available from 2005 to present.

"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."

Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk

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Class 452/55 - Knocking pen

Subclass of Class 452 - Butchering
Definition: Subject matter wherein the restraint or immobilizer comprises
No. of patents: 0