Granted Patent
Utility
US 5,685,296 · App. 08/426,644
Flow regulating valve and method
Inventors:
Ronald J. Zdrojkowski, Frank V. Blazek, John Raymond Pujol
Patented Case
View Patent ↗
Granted: Nov 11, 1997
Filed: Apr 21, 1995
Inventors
Ronald J. Zdrojkowski
Frank V. Blazek
John Raymond Pujol
Assignee (at issue)
Respironics, 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.