Granted Patent
Utility
US 4,836,684 · App. 07/161,457
Ultrasonic cleaning apparatus with phase diversifier
Inventors:
Laszlo Javorik, Peter J. Puskas
Patented Case
View Patent ↗
Granted: Jun 6, 1989
Filed: Feb 18, 1988
Inventors
Laszlo Javorik
Peter J. Puskas
Assignee (at issue)
Ultrasonic Power Corporation
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.