Granted Patent
Utility
US 4,884,381 · App. 07/249,195
Structural joint system
Inventor:
Pier L. Betti
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Sep 26, 1988
Inventor
Pier L. Betti
Assignee (at issue)
Jorge Gabrielli Zacharias Calixto
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.