Granted Patent
Utility
US 4,829,146 · App. 07/179,957
Metallic coupling system
Inventor:
Wolfgang Duve
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Apr 11, 1988
Inventor
Wolfgang Duve
Assignee (at issue)
ARTERICA 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.