Granted Patent
Utility
US 6,277,003 · App. 09/445,101
Gas abrasive particle apparatus and valving therefor
Inventors:
Mark S. Fernwood, Thomas S. Blake, Craig R. Bruns, Stephen Swihart
Patented Case
View Patent ↗
Granted: Aug 21, 2001
Filed: Mar 8, 2000
Inventors
Mark S. Fernwood
Thomas S. Blake
Craig R. Bruns
Stephen Swihart
Assignee (at issue)
Danville Engineering
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.