Granted Patent
Utility
US 5,128,528 · App. 07/597,434
Matrix encoding devices and methods
Inventor:
Byrne E. Heninger
Patented Case
View Patent ↗
Granted: Jul 7, 1992
Filed: Oct 15, 1990
Inventor
Byrne E. Heninger
Assignee (at issue)
Dittler Brothers Incorporated
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.