Granted Patent
Utility
US 5,172,713 · App. 07/864,292
Modular mixing valve
Inventor:
James A. Hall, Jr.
Patented Case
View Patent ↗
Granted: Dec 22, 1992
Filed: Apr 6, 1992
Inventor
James A. Hall, Jr.
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.