Granted Patent
Utility
US 4,569,707 · App. 06/679,797
Method of making foamed slip resistant surfaces
Inventor:
Michael D. Johnson
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Dec 10, 1984
Inventor
Michael D. Johnson
Assignee (at issue)
BECTON, DICKINSON AND COMPANY
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.