[net.general] How old is callback?

lesk@petrus.UUCP (Michael Lesk) (01/30/86)

A patent dispute has arisen about the origin of computers calling
you back after you call them.  I am posting this as a favor: neither
I nor my employer is involved on either side.  If anyone can date
the origin of callback before 1979, preferably with a written
reference, please tell:
   Mike Robinton
   Robinton Products Inc.
   580 Maude Ct.
   Sunnyvale, CA 94086
   408-738-8330
I can't believe the idea isn't old, but there seems to be a lack
of printed evidence.
Thanks.
*** REPLACE THIS LINE WITH YOUR MESSAGE ***