Granted Patent
Utility
US 4,837,779 · App. 07/180,942
Communicator and communication method and system
Inventor:
Paul Randall Lundgren
Patented Case
View Patent ↗
Granted: Jun 6, 1989
Filed: Apr 12, 1988
Inventor
Paul Randall Lundgren
Assignee (at issue)
Dual-Lite Manufacturing, 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.