Granted Patent
Utility
US 4,502,661 · App. 06/548,800
Electrically actuated valve assembly
Inventor:
Wesley S. Swanson
Patented Case
View Patent ↗
Granted: Mar 5, 1985
Filed: Nov 4, 1983
Inventor
Wesley S. Swanson
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.