Granted Patent
Utility
US 6,660,131 · App. 10/096,301
Coke drum bottom de-heading system
Inventor:
Ruben F. Lah
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Mar 11, 2002
Inventor
Ruben F. Lah
Assignee (at issue)
CURTISS-WRIGHT FLOW CONTROL 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.