IP Library Granted Patent US 5,291,521
Granted Patent Utility
US 5,291,521 · App. 07/820,113

Index assignment in redundancy-coded data communication systems

Inventors: William L. Betts, Stanley Bottoms
Patented Case View Patent ↗
Granted: Mar 1, 1994 Filed: Jan 13, 1992
Inventors
William L. Betts
Stanley Bottoms
Assignee (at issue)
AT&T Bell Laboratories

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,291,521
App. No.
07/820,113
Filed
1992-01-13
Granted
1994-03-01
Kind
A