IP Library › Granted Patent US 4,909,327
Granted Patent Utility
US 4,909,327 · App. 07/301,636

Marine riser

Inventor: Joseph R. Roche
Patented Case View Patent ↗
Granted: Mar 20, 1990 Filed: Jan 25, 1989
Inventor
Joseph R. Roche
Assignee (at issue)
Hydril Company

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Quick Facts
Patent No.
US 4,909,327
App. No.
07/301,636
Filed
1989-01-25
Granted
1990-03-20
Kind
A