Granted Patent
Utility
US 6,644,551 · App. 09/990,946
Card
Inventors:
Adelbert James Clayman, Thomson Ching-Tai Lee
Patented Case
View Patent ↗
Granted: Nov 11, 2003
Filed: Nov 9, 2001
Inventors
Adelbert James Clayman
Thomson Ching-Tai Lee
Assignee (at issue)
G + D Cardtech, 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.