Granted Patent
Utility
US 4,923,081 · App. 07/147,387
Storage tanks with fabricated support ribs
Inventors:
A. Michael Weaver, Joseph R. Wiegand, Dewey C. Stickley
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: Jan 25, 1988
Inventors
A. Michael Weaver
Joseph R. Wiegand
Dewey C. Stickley
Assignee (at issue)
Owens-Corning Fiberglas Corp.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.