Granted Patent
Utility
US 4,353,664 · App. 06/172,002
Free gusset metal ledger hanger
Inventor:
Tyrell T. Gilb
Patented Case
View Patent ↗
Granted: Oct 12, 1982
Filed: Jul 24, 1980
Inventor
Tyrell T. Gilb
Assignee (at issue)
Simpson Manufacturing Co., Inc.
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.