Granted Patent
Utility
US 4,308,513 · App. 06/185,218
Etched magnetic coil
Inventors:
Wilbur T. Layton, Clyde L. Zachry
Patented Case
View Patent ↗
Granted: Dec 29, 1981
Filed: Sep 8, 1980
Inventors
Wilbur T. Layton
Clyde L. Zachry
Assignee (at issue)
Burroughs, 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.