Granted Patent
Utility
US 4,673,516 · App. 06/902,514
Aqueous hydrogel lubricant
Inventor:
Johnny D. Berry
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Sep 2, 1986
Inventor
Johnny D. Berry
Assignee (at issue)
Integral Consulting 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.