Granted Patent
Utility
US 4,493,394 · App. 06/381,021
Brace lock for scaffolding
Inventor:
Stig Karlsen
Patented Case
View Patent ↗
Granted: Jan 15, 1985
Filed: May 24, 1982
Inventor
Stig Karlsen
Assignee (at issue)
Figgie Inernational 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.