Granted Patent
Utility
US 5,091,809 · App. 07/560,425
Disc drive with small air gap between back iron and spindle hub
Inventors:
Eugene E. Connors, Susan A. W. Holm
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Jul 31, 1990
Inventors
Eugene E. Connors
Susan A. W. Holm
Assignee (at issue)
Seagate Technology LLC
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.