Granted Patent
Utility
US 6,776,323 · App. 10/126,524
Sonotrode for ultrasound welding of plastics
Inventor:
Gerhard Schmidt
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Apr 22, 2002
Inventor
Gerhard Schmidt
Assignee (at issue)
Dynamit Nobel Kunststoff GmbH
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.