Granted Patent
Utility
US 5,165,641 · App. 07/510,066
Large contact area braces for a ladder
Inventor:
Don L. Southern
Patented Case
View Patent ↗
Granted: Nov 24, 1992
Filed: Apr 17, 1990
Inventor
Don L. Southern
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.