Granted Patent
Utility
US 4,563,103 · App. 06/488,520
Scrub sponge with opposed puncturing projections
Inventors:
Ronald R. Van Overloop, Frank N. Miller
Patented Case
View Patent ↗
Granted: Jan 7, 1986
Filed: Apr 25, 1983
Inventors
Ronald R. Van Overloop
Frank N. Miller
Assignee (at issue)
The Kendall Company LP
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.