Granted Patent
Utility
US 5,477,228 · App. 08/042,491
Differential global positioning system using radio data system
Inventors:
Anil Tiwari, Lynn Weber, Ronald P. Haley
Patented Case
View Patent ↗
Granted: Dec 19, 1995
Filed: Apr 13, 1993
Inventors
Anil Tiwari
Lynn Weber
Ronald P. Haley
Assignee (at issue)
Differential Corrections 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.