Granted Patent
Utility
US 6,288,476 · App. 09/370,324
Ultrasonic transducer with bias bolt compression bolt
Inventor:
William L. Puskas
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Aug 9, 1999
Inventor
William L. Puskas
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.