Granted Patent
Utility
US 6,646,821 · App. 10/071,011
Early leak detection system for a disc drive containing a low-density gas
Inventors:
Frank William Bernett, Louis J. Fioravanti
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Feb 7, 2002
Inventors
Frank William Bernett
Louis J. Fioravanti
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.