Granted Patent
Utility
US 4,911,739 · App. 07/376,431
Self-retaining adsorbent cartridge for refrigerant receiver
Inventors:
John S. Cullen, Samuel A. Incorvia
Patented Case
View Patent ↗
Granted: Mar 27, 1990
Filed: Jul 7, 1989
Inventors
John S. Cullen
Samuel A. Incorvia
Assignee (at issue)
Multiform Desiccants, 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.