Granted Patent
Utility
US 4,274,433 · App. 06/157,502
Packed plug for a fluid valve
Inventor:
Ira H. Schnall
Patented Case
View Patent ↗
Granted: Jun 23, 1981
Filed: Jun 9, 1980
Inventor
Ira H. Schnall
Assignee (at issue)
White Consolidated Industries, 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.