Granted Patent
Utility
US 4,130,974 · App. 05/769,342
Siding panels and the method of production
Inventors:
Alexander A. Chalmers, J. Lynn Gailey, Carl A. Wollam
Patented Case
View Patent ↗
Granted: Dec 26, 1978
Filed: Feb 16, 1977
Inventors
Alexander A. Chalmers
J. Lynn Gailey
Carl A. Wollam
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.