Granted Patent
Utility
US 4,821,480 · App. 07/201,016
Adjustable sidewall connection for roof panel support joists
Inventor:
James L. Silvey
Patented Case
View Patent ↗
Granted: Apr 18, 1989
Filed: Jun 1, 1988
Inventor
James L. Silvey
Assignee (at issue)
BUTLER MANUFACTURING 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.