Granted Patent
Utility
US 4,337,788 · App. 06/230,392
High pressure valve
Inventor:
Fritz O. Seger
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Feb 2, 1981
Inventor
Fritz O. Seger
Assignee (at issue)
SMITH INTERNATIONAL, 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.