Granted Patent
Utility
US 4,995,399 · App. 07/382,991
Blood pressure measuring system
Inventors:
Ressei Hayashi, Tokuji Hayakawa
Patented Case
View Patent ↗
Granted: Feb 26, 1991
Filed: Jul 21, 1989
Inventors
Ressei Hayashi
Tokuji Hayakawa
Assignee (at issue)
Colin Electronisc 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.