Granted Patent
Utility
US 4,263,079 · App. 05/969,911
Method of forming an integral closure for a thermoplastic container
Inventors:
Thomas A. Sutrina, R. Douglas Behr
Patented Case
View Patent ↗
Granted: Apr 21, 1981
Filed: Dec 15, 1978
Inventors
Thomas A. Sutrina
R. Douglas Behr
Assignee (at issue)
THE DOW CHEMICAL 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.