Granted Patent
Utility
US 4,707,752 · App. 06/446,276
Spacer means on floppy disks and associated techniques
Inventor:
Ko Ko Gyi
Patented Case
View Patent ↗
Granted: Nov 17, 1987
Filed: Dec 2, 1982
Inventor
Ko Ko Gyi
Assignee (at issue)
Unisys 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.