Granted Patent
Utility
US 4,387,355 · App. 06/267,680
Surface acoustic wave resonator
Inventors:
Takehiko Uno, Hiromichi Jumonji
Patented Case
View Patent ↗
Granted: Jun 7, 1983
Filed: May 28, 1981
Inventors
Takehiko Uno
Hiromichi Jumonji
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.