Granted Patent
Utility
US 5,787,354 · App. 08/415,825
Method and apparatus for locating a radiotelephone within a cellular system
Inventors:
Calvin Gray, Robert G. Zicker
Patented Case
View Patent ↗
Granted: Jul 28, 1998
Filed: Apr 3, 1995
Inventors
Calvin Gray
Robert G. Zicker
Assignee (at issue)
GTE Mobile Communications Service Corporation
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.