Granted Patent
Utility
US 4,321,632 · App. 06/148,055
Positioning system and formatting scheme for magnetic tape media
Inventors:
Michael D. Leis, Robert C. Rose
Patented Case
View Patent ↗
Granted: Mar 23, 1982
Filed: May 19, 1980
Inventors
Michael D. Leis
Robert C. Rose
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.