Granted Patent
Utility
US 4,301,012 · App. 06/033,031
Welded stainless steel mesh cleanable filter
Inventor:
Donald M. Puckett
Patented Case
View Patent ↗
Granted: Nov 17, 1981
Filed: Apr 25, 1979
Inventor
Donald M. Puckett
Assignee (at issue)
Purolator Technologies 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.