Granted Patent
Utility
US 4,760,621 · App. 06/867,525
Combination doorstop, holdopen and shock absorber
Inventor:
Michael E. Stromquist
Patented Case
View Patent ↗
Granted: Aug 2, 1988
Filed: May 27, 1986
Inventor
Michael E. Stromquist
Assignee (at issue)
Anthony's Manufacturing Company, 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.