Granted Patent
Utility
US 4,847,629 · App. 07/227,889
Retractable cellular antenna
Inventor:
Tetsuo Shimazaki
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Aug 3, 1988
Inventor
Tetsuo Shimazaki
Assignee (at issue)
Alliance Research 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.