U.S. patents available from 1976 to present.
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 144/152 - Shaping of curved-work guide

Subclass of Class 144 - Woodworking
Definition: Machine having such arrangement of guide-rollers or outline
No. of patents: 0