Granted Patent
Utility
US 4,791,418 · App. 07/065,849
Signal light
Inventors:
Hideo Kawahara, Harunobu Yoshida, Masato Hyodo
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Jun 24, 1987
Inventors
Hideo Kawahara
Harunobu Yoshida
Masato Hyodo
Assignee (at issue)
Taliq 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.