Granted Patent
Utility
US 6,681,121 · App. 09/625,159
Circuitry for activating a modem in a cellular telephone
Inventors:
Dan Alan Preston, Joseph D. Preston, Rod L. Proctor
Patented Case
View Patent ↗
Granted: Jan 20, 2004
Filed: Jul 25, 2000
Inventors
Dan Alan Preston
Joseph D. Preston
Rod L. Proctor
Assignee (at issue)
AIRBIQUITY 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.