Granted Patent
Utility
US 5,992,235 · App. 08/433,155
Ultrasonic test head and method for its operation
Inventors:
Eberhard Fischer, Werner Rathgeb, Anton Erhard, Walter Mohrle, Hermann Wustenberg
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: May 3, 1995
Inventors
Eberhard Fischer
Werner Rathgeb
Anton Erhard
Walter Mohrle
Hermann Wustenberg
Assignee (at issue)
Siemens Aktiengesellschaft
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.