Granted Patent
Utility
US 4,525,183 · App. 06/551,560
Valves for desiccant dryers
Inventors:
Harry Cordes, Thomas Haberer, Marcel G. Verrando
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: Nov 17, 1983
Inventors
Harry Cordes
Thomas Haberer
Marcel G. Verrando
Assignee (at issue)
Pall Corporation
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.