Granted Patent
Utility
US 4,309,112 · App. 06/178,850
Rate measurement analyzer
Inventors:
Holvor W. Ashley, Vincent Li
Patented Case
View Patent ↗
Granted: Jan 5, 1982
Filed: Aug 18, 1980
Inventors
Holvor W. Ashley
Vincent Li
Assignee (at issue)
Sherwood Medical Industries 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.