Granted Patent
Utility
US 5,787,180 · App. 08/826,083
Method of connecting a scrambler or encryption device to a hand-held portable cellular telephone
Inventors:
Christopher A. Hall, James R. Holthaus, Bradley A. Riensche
Patented Case
View Patent ↗
Granted: Jul 28, 1998
Filed: Mar 24, 1997
Inventors
Christopher A. Hall
James R. Holthaus
Bradley A. Riensche
Assignee (at issue)
Transcrypt International, 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.