Granted Patent
Utility
US 4,494,403 · App. 06/398,405
Filter testing apparatus and method
Inventors:
Cecil W. Bowers, Ivey G. Thompson, Thomas Allan
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Jul 14, 1982
Inventors
Cecil W. Bowers
Ivey G. Thompson
Thomas Allan
Assignee (at issue)
FLANDERS FILTERS, 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.