Granted Patent
Utility
US 6,351,852 · App. 09/727,058
Head-cleansing cap and method
Inventor:
Donald J. Propp
Patented Case
View Patent ↗
Granted: Mar 5, 2002
Filed: Nov 29, 2000
Inventor
Donald J. Propp
Assignee (at issue)
Tri-State Hospital Supply 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.