Granted Patent
Utility
US 6,401,485 · App. 09/680,765
Discharge refrigerant heater for inactive compressor line
Inventor:
Edward D. Hildreth, Jr.
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Oct 6, 2000
Inventor
Edward D. Hildreth, Jr.
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.