Granted Patent
Utility
US 5,111,352 · App. 07/369,833
Three-pole magnetic head with reduced flux leakage
Inventors:
Shyam C. Das, Michael Mallary
Patented Case
View Patent ↗
Granted: May 5, 1992
Filed: Jun 22, 1989
Inventors
Shyam C. Das
Michael Mallary
Assignee (at issue)
Digital Equipment 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.