Granted Patent
Utility
US 4,473,471 · App. 06/460,626
Filter sealing gasket with reinforcement ring
Inventors:
Arthur W. Robichaud, Charles G. Pickett, John G. Charney, Richard McGillick
Patented Case
View Patent ↗
Granted: Sep 25, 1984
Filed: Jan 24, 1983
Inventors
Arthur W. Robichaud
Charles G. Pickett
John G. Charney
Richard McGillick
Assignee (at issue)
PUROLATOR 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.