Granted Patent
Utility
US 6,672,260 · App. 10/397,910
Steam generator tube support plates with slotted disc springs
Inventor:
Nansheng Sun
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Mar 26, 2003
Inventor
Nansheng Sun
Assignee (at issue)
Babcock & Wilcox Canada Corp.
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.