Granted Patent
Utility
US 4,951,679 · App. 07/299,409
Pulse wave detecting apparatus having placement-condition detecting means
Inventor:
Chikao Harada
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Jan 23, 1989
Inventor
Chikao Harada
Assignee (at issue)
Colin Electronics Co., Ltd.
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.