Granted Patent
Utility
US 6,375,085 · App. 09/568,715
Reducing noise in a thermal expansion valve
Inventors:
David L. Martin, Robert A. Dayton
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: May 11, 2000
Inventors
David L. Martin
Robert A. Dayton
Assignee (at issue)
Parker-Hannifin 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.