Granted Patent
Utility
US 5,278,972 · App. 07/616,961
Communication system for converting
Inventors:
Albert D. Baker, Wayne Farmer, Richard E. Henderson, Thomas C. Prewitt, Mary E. Ricker, David B. Rucinski, Albert Victor Toy, Jerry Weltman
Patented Case
View Patent ↗
Granted: Jan 11, 1994
Filed: Nov 21, 1990
Inventors
Albert D. Baker
Wayne Farmer
Richard E. Henderson
Thomas C. Prewitt
Mary E. Ricker
David B. Rucinski
Albert Victor Toy
Jerry Weltman
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.