Granted Patent
Utility
US 5,721,180 · App. 08/577,955
Laminate filter media
Inventors:
Richard Daniel Pike, Peter W. Shipp, Jr.
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: Dec 22, 1995
Inventors
Richard Daniel Pike
Peter W. Shipp, Jr.
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.