Granted Patent
Utility
US 5,349,983 · App. 08/088,541
Proportional control valve for patient support system
Inventors:
Ryszard S. Ozarowski, Barry D. Hand, Robert C. Novack, Vernon D. Beard, James O. Threlkeld, William T. Sutton
Patented Case
View Patent ↗
Granted: Sep 27, 1994
Filed: Jul 7, 1993
Inventors
Ryszard S. Ozarowski
Barry D. Hand
Robert C. Novack
Vernon D. Beard
James O. Threlkeld
William T. Sutton
Assignee (at issue)
SSI Medical Services, 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.