Granted Patent
Utility
US 5,183,050 · App. 07/790,354
Pulse wave sensor
Inventor:
Norio Kawamura
Patented Case
View Patent ↗
Granted: Feb 2, 1993
Filed: Nov 12, 1991
Inventor
Norio Kawamura
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.