Granted Patent
Utility
US 5,871,450 · App. 08/776,158
Anesthetic depth measuring apparatus
Inventors:
Takashi Nomura, Hideichi Tsuda
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Jan 27, 1997
Inventors
Takashi Nomura
Hideichi Tsuda
Assignee (at issue)
Colin 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.