Granted Patent
Utility
US 6,721,576 · App. 09/770,350
Apparatus for expanding coverage area of base station
Inventors:
Hong Koo Kang, Young-Jae Cha
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Jan 26, 2001
Inventors
Hong Koo Kang
Young-Jae Cha
Assignee (at issue)
Hyundai Electronics Industries 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.