Granted Patent
Utility
US 4,604,669 · App. 06/647,192
Magnetostrictive record head
Inventors:
Dale O. Ballinger, William R. Chynoweth, Gerald J. Wade
Patented Case
View Patent ↗
Granted: Aug 5, 1986
Filed: Sep 4, 1984
Inventors
Dale O. Ballinger
William R. Chynoweth
Gerald J. Wade
Assignee (at issue)
Honeywell Limited
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.