Granted Patent
Utility
US 5,020,950 · App. 07/489,437
Riveting fastener with improved torque resistance
Inventor:
Harold A. Ladouceur
Patented Case
View Patent ↗
Granted: Jun 4, 1991
Filed: Mar 6, 1990
Inventor
Harold A. Ladouceur
Assignee (at issue)
Multifastener Corporation
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.