Granted Patent
Utility
US 4,644,977 · App. 06/715,542
Hose with coextruded cover consisting of multiple foamed or nonfoamed layers
Inventor:
Robert B. Arterburn
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Mar 25, 1985
Inventor
Robert B. Arterburn
Assignee (at issue)
The Gates Rubber Company
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.