Granted Patent
Utility
US 5,081,548 · App. 07/485,239
Data storage apparatus and method
Inventors:
Yoshizumi Inazawa, Brian A. Milthorp
Patented Case
View Patent ↗
Granted: Jan 14, 1992
Filed: Feb 26, 1990
Inventors
Yoshizumi Inazawa
Brian A. Milthorp
Assignees (at issue)
Hewlett-Packard Company, L.P.
SONY GROUP 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.