Granted Patent
Utility
US 6,679,325 · App. 10/071,734
Minimum clearance bow-spring centralizer
Inventor:
Jean Buytaert
Patented Case
View Patent ↗
Granted: Jan 20, 2004
Filed: Feb 8, 2002
Inventor
Jean Buytaert
Assignee (at issue)
FRANK'S INTERNATIONAL, LLC
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.