Granted Patent
Utility
US 4,358,573 · App. 06/268,432
Waxy maleic anhydride alpha olefin terpolymers
Inventor:
Calvin J. Verbrugge
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: May 29, 1981
Inventor
Calvin J. Verbrugge
Assignee (at issue)
S. C. JOHNSON & SON, 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.