Granted Patent
Utility
US 4,358,377 · App. 06/183,663
Shear-vectoring design for composite casing end and removable, pressure-locking closure therefor
Inventor:
George B. Clark
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: Sep 2, 1980
Inventor
George B. Clark
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.