Granted Patent
Utility
US 4,733,401 · App. 06/872,594
Block coding into 24 coordinates and detection of transmitted signals
Inventor:
Fred M. Longstaff
Patented Case
View Patent ↗
Granted: Mar 22, 1988
Filed: Jun 10, 1986
Inventor
Fred M. Longstaff
Assignee (at issue)
Motorola Canada Limited
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.