Granted Patent
Utility
US 5,404,583 · App. 08/090,894
Portable communication system with concealing features
Inventors:
Farzin Lalezari, Robert Marshall
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: Jul 12, 1993
Inventors
Farzin Lalezari
Robert Marshall
Assignee (at issue)
BALL 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.