Granted Patent
Utility
US 6,252,990 · App. 09/087,228
Multichannel multiplex system for transmitting and receiving coded data signals
Inventor:
Yuzo Senda
Patented Case
View Patent ↗
Granted: Jun 26, 2001
Filed: May 29, 1998
Inventor
Yuzo Senda
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.