Granted Patent
Utility
US 4,829,786 · App. 07/232,075
Flooded evaporator with enhanced oil return means
Inventors:
James R. Sand, James C. Wendschlag
Patented Case
View Patent ↗
Granted: May 16, 1989
Filed: Aug 15, 1988
Inventors
James R. Sand
James C. Wendschlag
Assignee (at issue)
American Standard 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.