Granted Patent
Utility
US 6,149,161 · App. 09/060,342
Grooved pumping seal
Inventors:
Alan Lyndon Grantz, Roger A. Addy, Robert A. Nottingham
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Apr 14, 1998
Inventors
Alan Lyndon Grantz
Roger A. Addy
Robert A. Nottingham
Assignee (at issue)
Seagate Technology LLC
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.