Granted Patent
Utility
US 5,255,142 · App. 08/047,309
Thin film magnetic head with narrow yoke
Inventors:
Edgar M. Williams, Peter G. Bischoff, Shin-ichi Akoh
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Apr 19, 1993
Inventors
Edgar M. Williams
Peter G. Bischoff
Shin-ichi Akoh
Assignee (at issue)
Read Rite 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.