Granted Patent
Utility
US 4,639,808 · App. 06/655,011
Asymmetrical shields for controlling feedthrough in read/write heads
Inventor:
Richard F. M. Thornley
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Sep 26, 1984
Inventor
Richard F. M. Thornley
Assignee (at issue)
Storage Technology Corporation
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.