Granted Patent
Utility
US 4,889,134 · App. 07/172,924
Device for measuring multiple channels of heartbeat activity and encoding into a form suitable for simultaneous transmission over
Inventors:
Douglas J. Greenwold, Herbert E. Reinhold, Jr.
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Mar 25, 1988
Inventors
Douglas J. Greenwold
Herbert E. Reinhold, Jr.
Assignee (at issue)
Survival Technology, Inc.
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.