Granted Patent
Utility
US 6,325,296 · App. 09/625,454
Quieting a thermal expansion valve
Inventor:
Robert A. Dayton
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Jul 26, 2000
Inventor
Robert A. Dayton
Assignee (at issue)
Eaton 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.