Granted Patent
Utility
US 6,604,736 · App. 10/067,361
Spring assembly with captured core
Inventor:
Brian R. Tomczak
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Feb 7, 2002
Inventor
Brian R. Tomczak
Assignee (at issue)
BARNES GROUP INC.
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.