Granted Patent
Utility
US 4,944,258 · App. 07/340,899
Operator protection for high pressure hose machines
Inventors:
Robert D. Knutson, Bruce M. Boczkiewicz, James C. Wurster
Patented Case
View Patent ↗
Granted: Jul 31, 1990
Filed: Apr 17, 1989
Inventors
Robert D. Knutson
Bruce M. Boczkiewicz
James C. Wurster
Assignee (at issue)
Super Products LLC
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.