Granted Patent
Utility
US 6,477,849 · App. 09/876,037
Method and apparatus for testing heat pumps
Inventors:
Charles G. Butts, Richard H. Bair, III, Mark R. Lunsford
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Jun 8, 2001
Inventors
Charles G. Butts
Richard H. Bair, III
Mark R. Lunsford
Assignee (at issue)
Kendro Laboratory Products, 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.