Granted Patent
Utility
US 6,202,859 · App. 09/304,146
Jseam tapping plate with gasket groove for spin-on filter assemblies
Inventors:
Brian J. Langsdorf, Christopher R. Reamsnyder, Richard R. Berkey
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: May 3, 1999
Inventors
Brian J. Langsdorf
Christopher R. Reamsnyder
Richard R. Berkey
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.