Granted Patent
Utility
US 6,655,871 · App. 10/070,891
Vibration exciter for ground compacting devices
Inventor:
Franz Riedl
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Mar 7, 2002
Inventor
Franz Riedl
Assignee (at issue)
Wacker Construction Equipment AG
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.