Granted Patent
Utility
US 4,420,663 · App. 06/213,948
Material for electrical devices having a flexible member
Inventors:
Willis A. Larson, Edwina K. Dulen
Patented Case
View Patent ↗
Granted: Dec 13, 1983
Filed: Dec 8, 1980
Inventors
Willis A. Larson
Edwina K. Dulen
Assignee (at issue)
Oak Industries 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.