Granted Patent
Utility
US 5,507,339 · App. 08/060,686
Reinforced hydraulically expanded coil
Inventor:
Richard L. Holbrook
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: May 12, 1993
Inventor
Richard L. Holbrook
Assignee (at issue)
The Babcock & Wilcox Company
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.