Granted Patent
Utility
US 6,728,182 · App. 09/950,412
Tracking and focus servo system with a media type boundary crossing detector
Inventors:
Ron J. Kadlec, Christopher J. Turner
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Sep 10, 2001
Inventors
Ron J. Kadlec
Christopher J. Turner
Assignee (at issue)
DPHI Acquisitions, Inc.
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.