Granted Patent
Utility
US 6,702,660 · App. 10/098,164
Roughening device
Inventors:
William P. Gundy, Ernst Geiger
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Mar 14, 2002
Inventors
William P. Gundy
Ernst Geiger
Assignee (at issue)
William P. Gundy
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.