Granted Patent
Utility
US 4,585,702 · App. 06/509,390
Magnetic recording medium
Inventors:
Claiborn L. Osborn, Joseph V. Koleske
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Jun 30, 1983
Inventors
Claiborn L. Osborn
Joseph V. Koleske
Assignee (at issue)
Union Carbide 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.