Granted Patent
Utility
US 6,581,175 · App. 09/472,668
Apparatus and method of requesting retransmission of a message across a network
Inventors:
Richard Crump, Janet Doong, Xiangrong Cai
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Dec 27, 1999
Inventors
Richard Crump
Janet Doong
Xiangrong Cai
Assignee (at issue)
Nortel Networks Limited
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.