Granted Patent
Utility
US 4,690,371 · App. 06/790,279
Electromagnetic valve with permanent magnet armature
Inventors:
Robert W. Bosley, Samson Kirshman, Dan B. LeMay, Wayne G. Renken
Patented Case
View Patent ↗
Granted: Sep 1, 1987
Filed: Oct 22, 1985
Inventors
Robert W. Bosley
Samson Kirshman
Dan B. LeMay
Wayne G. Renken
Assignee (at issue)
Innovus
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.