IP Library › Granted Patent US 4,865,220
Granted Patent Utility
US 4,865,220 · App. 07/214,350

Double wall tank fittings

Inventor: Joseph R. Wiegand
Patented Case View Patent ↗
Granted: Sep 12, 1989 Filed: Jul 1, 1988
Inventor
Joseph R. Wiegand
Assignee (at issue)
Owens-Corning Fiberglas Corp.

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Quick Facts
Patent No.
US 4,865,220
App. No.
07/214,350
Filed
1988-07-01
Granted
1989-09-12
Kind
A