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

Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."

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Class 76/28 - Chisel-cutting

Subclass of Class 76 - Metal tools and implements, making
Definition: Machines in which saw-teeth are formed upon a blank by means
No. of patents: 0