Granted Patent
Utility
US 4,228,629 · App. 05/909,937
Vertical siding system
Inventors:
Alexander A. Chalmers, J. Lynn Gailey, James Arlie Englund, Stephen Popek
Patented Case
View Patent ↗
Granted: Oct 21, 1980
Filed: May 26, 1978
Inventors
Alexander A. Chalmers
J. Lynn Gailey
James Arlie Englund
Stephen Popek
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.