Granted Patent
Utility
US 4,584,005 · App. 06/625,304
High efficiency particulate air filter and method of fabricating same
Inventors:
Thomas Allan, Robert V. Cramer
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Jun 27, 1984
Inventors
Thomas Allan
Robert V. Cramer
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.