Granted Patent
Utility
US 4,538,153 · App. 06/414,804
Directivity diversity communication system with microstrip antenna
Inventor:
Tokio Taga
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Sep 3, 1982
Inventor
Tokio Taga
Assignee (at issue)
Nippon Telegraph and Telephone Public 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.