Granted Patent
Utility
US 5,203,410 · App. 07/809,934
Blowout safety system for snubbing equipment
Inventors:
Charles C. Cobb, Tibor Laky
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: Dec 18, 1991
Inventors
Charles C. Cobb
Tibor Laky
Assignee (at issue)
Otis Engineering 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.