IP Library › Granted Patent US 5,114,441
Granted Patent Utility
US 5,114,441 · App. 07/609,186

Oxygen concentrator system and valve structure

Inventors: Rowland W. Kanner, Stephen P. Lisak
Patented Case View Patent ↗
Granted: May 19, 1992 Filed: Nov 2, 1990
Inventors
Rowland W. Kanner
Stephen P. Lisak
Assignee (at issue)
RYDER INTERNATIONAL CO., LTD.

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Quick Facts
Patent No.
US 5,114,441
App. No.
07/609,186
Filed
1990-11-02
Granted
1992-05-19
Kind
A