Granted Patent
Utility
US 4,421,906 · App. 06/434,685
Water-based epoxy resin coating composition
Inventors:
Harold G. Waddill, Kathy B. Sellstrom
Patented Case
View Patent ↗
Granted: Dec 20, 1983
Filed: Oct 15, 1982
Inventors
Harold G. Waddill
Kathy B. Sellstrom
Assignee (at issue)
Texaco Inc.
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.