IP Library › Granted Patent US 4,776,839
Granted Patent Utility
US 4,776,839 · App. 06/922,080

Three stage implantable pressure relief valve with improved valve stem member

Inventor: Demetrios Doumenis
Patented Case View Patent ↗
Granted: Oct 11, 1988 Filed: Oct 21, 1986
Inventor
Demetrios Doumenis
Assignee (at issue)
CORDIS CORPORATION

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Quick Facts
Patent No.
US 4,776,839
App. No.
06/922,080
Filed
1986-10-21
Granted
1988-10-11
Kind
A