Granted Patent
Utility
US 5,421,784 · App. 08/280,018
Driven pulley with flyweights effective at low speeds
Inventor:
Jean-Francois Robert
Patented Case
View Patent ↗
Granted: Jun 6, 1995
Filed: Jul 25, 1994
Inventor
Jean-Francois Robert
Assignee (at issue)
Powerbloc IBC Canada Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.