Granted Patent
Utility
US 4,420,875 · App. 06/209,295
Method of mounting and casting a flat rotor
Inventor:
Michel Coquillart
Patented Case
View Patent ↗
Granted: Dec 20, 1983
Filed: Nov 21, 1980
Inventor
Michel Coquillart
Assignee (at issue)
Mavilor Systemes
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.