Granted Patent
Utility
US 6,062,570 · App. 08/620,695
Stem sealing system for broad temperature ranges
Inventor:
Irving C. Erickson
Patented Case
View Patent ↗
Granted: May 16, 2000
Filed: Mar 21, 1996
Inventor
Irving C. Erickson
Assignee (at issue)
Barber-Coleman 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.