Granted Patent
Utility
US 6,314,283 · App. 09/300,954
Cellular phone subsidy lock
Inventor:
Ronald L. Fielden
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Apr 28, 1999
Inventor
Ronald L. Fielden
Assignee (at issue)
NEC Corporation Of America
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.