Granted Patent
Utility
US 5,022,207 · App. 07/459,944
Building panel having locking flange and locking receptacle
Inventor:
G. Robert Hartnett
Patented Case
View Patent ↗
Granted: Jun 11, 1991
Filed: Jan 2, 1990
Inventor
G. Robert Hartnett
Assignee (at issue)
Aluminum Company of America
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.