Granted Patent
Utility
US 4,928,701 · App. 07/312,183
Method and apparatus for monitoring blood pressure
Inventors:
Chikao Harada, Minoru Niwa
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Feb 21, 1989
Inventors
Chikao Harada
Minoru Niwa
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.