Granted Patent
Utility
US 6,404,807 · App. 09/498,105
High speed dial-up service using PCM modem technology
Inventors:
Sepehr Mehrabanzad, Minh Hoang
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Feb 4, 2000
Inventors
Sepehr Mehrabanzad
Minh Hoang
Assignee (at issue)
Motorola, 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.