Granted Patent
Utility
US 4,901,733 · App. 07/312,178
Pulse wave detecting apparatus
Inventors:
Noriyuki Kaida, Hifumi Yokoe, Chikao Harada, Minoru Niwa, Masanobu Yasui
Patented Case
View Patent ↗
Granted: Feb 20, 1990
Filed: Feb 21, 1989
Inventors
Noriyuki Kaida
Hifumi Yokoe
Chikao Harada
Minoru Niwa
Masanobu Yasui
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.