Granted Patent
Utility
US 4,476,707 · App. 06/366,770
Gas flow measurement with detented chopper valve
Inventors:
Henry L. Burns, Erik William Peterson
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Apr 8, 1982
Inventors
Henry L. Burns
Erik William Peterson
Assignee (at issue)
Bear Medical Systems, 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.