Granted Patent
Utility
US 4,445,606 · App. 06/330,610
Armature assembly for electromagnetic coupling
Inventor:
Kalvin G. Van Laningham
Patented Case
View Patent ↗
Granted: May 1, 1984
Filed: Dec 14, 1981
Inventor
Kalvin G. Van Laningham
Assignee (at issue)
Warner Electric Brake & Clutch Company
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.