Granted Patent
Utility
US 4,914,530 · App. 07/098,913
Media defect management within disk drive sector format
Inventors:
Randolph H. Graham, Dennis W. Hollenbeck
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: Sep 21, 1987
Inventors
Randolph H. Graham
Dennis W. Hollenbeck
Assignee (at issue)
Plus Development
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.