Granted Patent
Utility
US 4,411,218 · App. 06/387,492
Apparatus for producing straited surface coatings
Inventors:
Carl A. Wollam, J. Lynn Gailey, Alexander F. Chalmers
Patented Case
View Patent ↗
Granted: Oct 25, 1983
Filed: Jun 11, 1982
Inventors
Carl A. Wollam
J. Lynn Gailey
Alexander F. Chalmers
Assignee (at issue)
Alcan Aluminum Corporation
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.