Granted Patent
Utility
US 6,549,368 · App. 09/325,992
Segmented plate hub hold down system for recording medium
Inventor:
Frederick J. Jeffers
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Jun 4, 1999
Inventor
Frederick J. Jeffers
Assignee (at issue)
IO-Mega Holding 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.