Granted Patent
Utility
US 4,418,111 · App. 06/406,340
Non-skid surface compositions for paper products
Inventor:
Ronald Carstens
Patented Case
View Patent ↗
Granted: Nov 29, 1983
Filed: Aug 9, 1982
Inventor
Ronald Carstens
Assignee (at issue)
Key Technology, 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.