Granted Patent
Utility
US 6,386,284 · App. 09/503,129
Snubbing unit drilling system
Inventors:
David A. Buck, Daniel S. Bangert
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Feb 11, 2000
Inventors
David A. Buck
Daniel S. Bangert
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.