Granted Patent
Utility
US 5,628,772 · App. 08/572,534
Therapeutic massage mask
Inventor:
Robin D. Russell
Patented Case
View Patent ↗
Granted: May 13, 1997
Filed: Dec 14, 1995
Inventor
Robin D. Russell
Assignee (at issue)
R-Jayco Ltd., 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.