Granted Patent
Utility
US 6,081,137 · App. 09/166,960
Frequency detecting circuit
Inventor:
Sang-Shin Choi
Patented Case
View Patent ↗
Granted: Jun 27, 2000
Filed: Oct 6, 1998
Inventor
Sang-Shin Choi
Assignee (at issue)
LG Semicon 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.