Granted Patent
Utility
US 5,366,833 · App. 08/035,356
Security documents
Inventors:
Joel F. Shaw, Gary A. van Beek
Patented Case
View Patent ↗
Granted: Nov 22, 1994
Filed: Mar 22, 1993
Inventors
Joel F. Shaw
Gary A. van Beek
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.