Granted Patent
Utility
US 4,504,697 · App. 06/372,615
Sealed electrical devices
Inventors:
Howard R. Chapin, Arnold E. Gurley
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Apr 28, 1982
Inventors
Howard R. Chapin
Arnold E. Gurley
Assignee (at issue)
Littelfuse, Inc.
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.