Granted Patent
Utility
US 4,898,031 · App. 07/222,751
Vibrational angular velocity sensor
Inventors:
Takahiro Oikawa, Yoshiyuki Suzuki, Tatsumi Ohtsuka
Patented Case
View Patent ↗
Granted: Feb 6, 1990
Filed: Jul 22, 1988
Inventors
Takahiro Oikawa
Yoshiyuki Suzuki
Tatsumi Ohtsuka
Assignee (at issue)
YAZAKI 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.