Granted Patent
Utility
US 5,556,320 · App. 08/178,737
Mobile vibrating abrasive cleaning apparatus
Inventor:
Bryan C. Baker
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: Jan 7, 1994
Inventor
Bryan C. Baker
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.