Granted Patent
Utility
US 4,257,549 · App. 06/035,210
Method of making aluminum-base metal clad galvanized steel laminate
Inventor:
Robert J. Bricmont
Patented Case
View Patent ↗
Granted: Mar 24, 1981
Filed: May 2, 1979
Inventor
Robert J. Bricmont
Assignee (at issue)
H. H. Robertson Company
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.