IP Library › Granted Patent US 4,661,263
Granted Patent Utility
US 4,661,263 · App. 06/775,150

Water clarification

Inventor: David N. Roark
Patented Case View Patent ↗
Granted: Apr 28, 1987 Filed: Sep 12, 1985
Inventor
David N. Roark
Assignee (at issue)
Ethyl Corporation

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Quick Facts
Patent No.
US 4,661,263
App. No.
06/775,150
Filed
1985-09-12
Granted
1987-04-28
Kind
A