Granted Patent
Utility
US 5,718,581 · App. 08/438,335
Air abrasive particle apparatus
Inventors:
Mark S. Fernwood, Thomas S. Blake, Craig R. Bruns
Patented Case
View Patent ↗
Granted: Feb 17, 1998
Filed: May 9, 1995
Inventors
Mark S. Fernwood
Thomas S. Blake
Craig R. Bruns
Assignee (at issue)
Danville Manufacturing Inc.
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.