Granted Patent
Utility
US 4,817,914 · App. 07/137,785
Electromagnetic valve assembly
Inventors:
James M. Pick, Wesley S. Swanson
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Dec 23, 1987
Inventors
James M. Pick
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.