Granted Patent
Utility
US 6,822,372 · App. 10/178,751
Apparatus, circuitry and methods for cleaning and/or processing with sound waves
Inventor:
William L. Puskas
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: Jun 24, 2002
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.