Granted Patent
Utility
US 4,417,574 · App. 06/373,940
Liquid drain for patient breathing apparatus
Inventors:
Daniel A. Talonn, Robert E. Phillips, Alan B. Ranford
Patented Case
View Patent ↗
Granted: Nov 29, 1983
Filed: May 3, 1982
Inventors
Daniel A. Talonn
Robert E. Phillips
Alan B. Ranford
Assignee (at issue)
Sherwood Medical Company
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.