Granted Patent
Utility
US 5,603,445 · App. 08/201,303
Ultrasonic wire bonder and transducer improvements
Inventors:
William H. Hill, Joseph E. Donner
Patented Case
View Patent ↗
Granted: Feb 18, 1997
Filed: Feb 24, 1994
Inventors
William H. Hill
Joseph E. Donner
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.