Granted Patent
Utility
US 4,380,909 · App. 06/284,379
Method and apparatus for co-generation of electrical power and absorption-type heat pump air conditioning
Inventor:
Harry M. Sung
Patented Case
View Patent ↗
Granted: Apr 26, 1983
Filed: Jul 17, 1981
Inventor
Harry M. Sung
Assignee (at issue)
Chevron Research Company
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.