IP Library › Granted Patent US 4,971,148
Granted Patent Utility
US 4,971,148 · App. 07/303,905

Flow diverter

Inventors: Joseph R. Roche, Hugh L. Elkins
Patented Case View Patent ↗
Granted: Nov 20, 1990 Filed: Jan 30, 1989
Inventors
Joseph R. Roche
Hugh L. Elkins
Assignee (at issue)
Hydril Company

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Quick Facts
Patent No.
US 4,971,148
App. No.
07/303,905
Filed
1989-01-30
Granted
1990-11-20
Kind
A