Granted Patent
Utility
US 6,585,577 · App. 08/953,695
Vibrating abrasive cleaning apparatus and method
Inventor:
Joe O. Trahan
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Oct 17, 1997
Inventor
Joe O. Trahan
Assignee (at issue)
DRILLTEC PATENTS & TECHNOLOGIES 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.