Granted Patent
Utility
US 6,243,994 · App. 09/227,826
Joint for pre-cast concrete twin-leaf arch sections
Inventor:
Joe Bernini
Patented Case
View Patent ↗
Granted: Jun 12, 2001
Filed: Jan 11, 1999
Inventor
Joe Bernini
Assignee (at issue)
Bebo of America
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.