Granted Patent
Utility
US 6,214,215 · App. 09/271,137
Resilient oil filter seal with pressure relief valves
Inventors:
Richard J. Berkey, Allen B. Wright
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Mar 17, 1999
Inventors
Richard J. Berkey
Allen B. Wright
Assignee (at issue)
AlliedSignal, 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.