Granted Patent
Utility
US 4,847,862 · App. 07/178,980
Global positioning system course acquisition code receiver
Inventors:
Paul Braisted, Ralph F. Eschenbach
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Apr 7, 1988
Inventors
Paul Braisted
Ralph F. Eschenbach
Assignee (at issue)
Trimble Navigation 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.