Granted Patent
Utility
US 6,551,298 · App. 09/718,112
Controlled medicament security enclosure system
Inventors:
Jack Yongfeng Zhang, Frank Zhishi Xia, Mary Ziping Luo
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Nov 21, 2000
Inventors
Jack Yongfeng Zhang
Frank Zhishi Xia
Mary Ziping Luo
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.