Granted Patent
Utility
US 5,877,728 · App. 08/864,497
Multiple loop antenna
Inventors:
Wen-Liang Wu, Alan P. Dutcher
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: May 28, 1997
Inventors
Wen-Liang Wu
Alan P. Dutcher
Assignee (at issue)
CHECKPOINT SYSTEMS, 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.