Granted Patent
Utility
US 4,328,038 · App. 06/206,508
Resin coated aluminum
Patented Case
View Patent ↗
Granted: May 4, 1982
Filed: Nov 13, 1980
Assignee (at issue)
BJ-Hughes 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.