IP Library › Granted Patent US 4,892,540
Granted Patent Utility
US 4,892,540 · App. 07/183,774

Two-leaflet prosthetic heart valve

Inventor: Franco Vallana
Patented Case View Patent ↗
Granted: Jan 9, 1990 Filed: Apr 20, 1988
Inventor
Franco Vallana
Assignee (at issue)
Sorin Biomedica S.p.A.

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Quick Facts
Patent No.
US 4,892,540
App. No.
07/183,774
Filed
1988-04-20
Granted
1990-01-09
Kind
A