Granted Patent
Utility
US 6,818,076 · App. 09/533,345
Multi-strand coil spring
Inventor:
Farrokh Farzin-Nia
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Mar 23, 2000
Inventor
Farrokh Farzin-Nia
Assignee (at issue)
Ormco 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.