Granted Patent
Utility
US 4,522,992 · App. 06/508,697
Aromatic monovinyl alkenyl alphaolefin anhydride terpolymers
Inventor:
Calvin J. Verbrugge
Patented Case
View Patent ↗
Granted: Jun 11, 1985
Filed: Jun 28, 1983
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.