Granted Patent
Utility
US 5,062,021 · App. 07/491,586
Selectively textured magnetic recording media
Inventors:
Rajiv Yadav Ranjan, David Lambeth
Patented Case
View Patent ↗
Granted: Oct 29, 1991
Filed: Mar 12, 1990
Inventors
Rajiv Yadav Ranjan
David Lambeth
Assignee (at issue)
Magnetic Peripherals, 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.