IP Library › Granted Patent US 5,992,449
Granted Patent Utility
US 5,992,449 · App. 09/036,813

Pilot operated safety relief valve adapted for low fluid pressures

Inventor: Charles F. Sprague
Patented Case View Patent ↗
Granted: Nov 30, 1999 Filed: Mar 9, 1998
Inventor
Charles F. Sprague
Assignee (at issue)
Groth LLC

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Quick Facts
Patent No.
US 5,992,449
App. No.
09/036,813
Filed
1998-03-09
Granted
1999-11-30
Kind
A