Granted Patent
Utility
US 6,385,940 · App. 09/509,259
Method and apparatus for strengthening/restoring a reinforced/prestressed concrete structure
Inventors:
Markus Maier, Dieter Sandner, Hans-Peter Andra
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Jun 16, 2000
Inventors
Markus Maier
Dieter Sandner
Hans-Peter Andra
Assignee (at issue)
Leonhardt, Andrä und Partner Beratende Ingenieure VBI AG
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.