Granted Patent
Utility
US 6,565,714 · App. 09/946,917
Coke drum bottom de-heading system
Inventor:
Ruben F. Lah
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Sep 5, 2001
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.