Granted Patent
Utility
US 4,972,683 · App. 07/401,764
Condenser with receiver/subcooler
Inventor:
Paul K. Beatenbough
Patented Case
View Patent ↗
Granted: Nov 27, 1990
Filed: Sep 1, 1989
Inventor
Paul K. Beatenbough
Assignee (at issue)
Blackstone 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.