Granted Patent
Utility
US 4,248,021 · App. 06/068,501
Support means for wall or roof structure
Inventor:
Frederick William Dyer
Patented Case
View Patent ↗
Granted: Feb 3, 1981
Filed: Aug 22, 1979
Inventor
Frederick William Dyer
Assignee (at issue)
H. H. Robertson 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.