Granted Patent
Utility
US 4,412,263 · App. 06/290,272
Recording head protective overlay and cleaning arrangement
Inventors:
Alfred M. Nelson, Houshang Rasekhi, Ronald J. Cieplik
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: Aug 5, 1981
Inventors
Alfred M. Nelson
Houshang Rasekhi
Ronald J. Cieplik
Assignee (at issue)
Wang Laboratories, 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.