Granted Patent
Utility
US 6,603,985 · App. 09/592,174
Ringing tone control method and device for mobile communication apparatus
Inventor:
Tamami Ichihashi
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Jun 12, 2000
Inventor
Tamami Ichihashi
Assignee (at issue)
NEC 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.