Granted Patent
Utility
US 5,515,034 · App. 08/264,945
Simple communication system capable of message broadcasting
Inventors:
Kiyokazu Otsuka, Hiroyuki Watanabe
Patented Case
View Patent ↗
Granted: May 7, 1996
Filed: Jun 24, 1994
Inventors
Kiyokazu Otsuka
Hiroyuki Watanabe
Assignee (at issue)
NEC 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.