Granted Patent
Utility
US 6,040,744 · App. 09/111,800
Temperature-compensated crystal oscillator
Inventors:
Yasuhiro Sakurai, Hiroyuki Fukayama
Patented Case
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Granted: Mar 21, 2000
Filed: Jul 8, 1998
Inventors
Yasuhiro Sakurai
Hiroyuki Fukayama
Assignee (at issue)
CITIZEN WATCH CO., LTD.
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.