Granted Patent
Utility
US 4,804,466 · App. 03/763,563
Fluid filter with internal spacer
Inventors:
Richard D. Cooper, Ojars W. Pincers
Patented Case
View Patent ↗
Granted: Feb 14, 1989
Filed: Aug 8, 1985
Inventors
Richard D. Cooper
Ojars W. Pincers
Assignee (at issue)
Allomatic 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.