Granted Patent
Utility
US 4,789,285 · App. 07/029,536
Anchoring plug
Inventor:
Artur Fischer
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Mar 23, 1987
Inventor
Artur Fischer
Assignee (at issue)
Artur Fischer GmbH & Co. KG
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.