U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Superstar singer Michael Jackson co-patented a "Method and means for creating anti-gravity illusion" in 1993.

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Class 400/306.1 - By settable elements (e.g., pins, bars, slides)

Subclass of Class 400 - Typewriting machines
Definition: Subject matter wherein the irregular increments of carriage* movement
No. of patents: 0