Granted Patent
Utility
US 6,509,870 · App. 10/079,248
Software-compensated crystal oscillator
Inventors:
Hiroshi Matsushita, Paul W. McBurney
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Feb 19, 2002
Inventors
Hiroshi Matsushita
Paul W. McBurney
Assignees (at issue)
SEIKO EPSON CORPORATION
ERIDE, 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.