Granted Patent
Utility
US 4,720,936 · App. 06/928,181
Extruded weather strip structure
Inventor:
Robert T. Ellingson
Patented Case
View Patent ↗
Granted: Jan 26, 1988
Filed: Nov 7, 1986
Inventor
Robert T. Ellingson
Assignee (at issue)
Astro Plastics, 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.