Granted Patent
Utility
US 4,445,188 · App. 06/253,763
Media distribution of head contact wear on a disc
Inventor:
Peter Barrett
Patented Case
View Patent ↗
Granted: Apr 24, 1984
Filed: Mar 26, 1981
Inventor
Peter Barrett
Assignee (at issue)
Burroughs, 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.