Granted Patent
Utility
US 5,448,428 · App. 08/054,657
Phase locking a disk drive spindle to a reference signal
Inventors:
William F. Even, William D. Lewis
Patented Case
View Patent ↗
Granted: Sep 5, 1995
Filed: Apr 23, 1993
Inventors
William F. Even
William D. Lewis
Assignee (at issue)
Quantum 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.