IP Library › Granted Patent US 4,879,996
Granted Patent Utility
US 4,879,996 · App. 07/002,877

Closed circuit breathing apparatus

Inventors: Van Ness Harwood, Jr., Jeffrey J. Dosch, Loyal G. Netteland
Patented Case View Patent ↗
Granted: Nov 14, 1989 Filed: Jan 13, 1987
Inventors
Van Ness Harwood, Jr.
Jeffrey J. Dosch
Loyal G. Netteland

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Quick Facts
Patent No.
US 4,879,996
App. No.
07/002,877
Filed
1987-01-13
Granted
1989-11-14
Kind
A