Granted Patent
Utility
US 6,289,734 · App. 09/259,737
In-situ non-destructive audiosonic identification system for visco-elastic materials
Inventor:
Antanas Daugela
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: Mar 1, 1999
Inventor
Antanas Daugela
Assignee (at issue)
Hysitron, 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.