Granted Patent
Utility
US 4,952,262 · App. 07/268,589
Hose construction
Inventors:
Donald E. Washkewicz, Harold Belofsky
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Nov 8, 1988
Inventors
Donald E. Washkewicz
Harold Belofsky
Assignee (at issue)
Parker-Hannifin Corporation
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.