Granted Patent
Utility
US 4,975,829 · App. 06/909,687
Communication interface protocol
Inventors:
Thomas J. Clarey, Jeffrey L. Havens
Patented Case
View Patent ↗
Granted: Dec 4, 1990
Filed: Sep 22, 1986
Inventors
Thomas J. Clarey
Jeffrey L. Havens
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.