Granted Patent
Utility
US 5,204,932 · App. 07/460,651
Servo circuit for magnetic disk apparatus
Inventors:
Tohru Shinohara, Shuichi Hashimoto
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: Jan 3, 1990
Inventors
Tohru Shinohara
Shuichi Hashimoto
Assignee (at issue)
Fujitsu 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.