Granted Patent
Utility
US 4,608,166 · App. 06/718,726
Press fit filter
Inventor:
Thomas A. Cain
Patented Case
View Patent ↗
Granted: Aug 26, 1986
Filed: Apr 1, 1985
Inventor
Thomas A. Cain
Assignee (at issue)
Filtertek 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.