Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Reexamination Certificate
2005-04-19
2005-04-19
Chan, Wing F. (Department: 2643)
Telephonic communications
Telephone line or system combined with diverse electrical...
Having transmission of a digital message signal over a...
C379S093170, C379S093120, C379S093080
Reexamination Certificate
active
06882710
ABSTRACT:
A telephone system includes a data distributor between the outputs of a public exchange switch and customer lines. The data distributor provides a controllable, simultaneous and direct connection between a source of data and a plurality of the customers' telephones to facilitate direct delivery of data to a large number of customers. Telephones for use with the system provide processors for receiving and displaying data and for transmitting responses by the customers.
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patent: 6154528 (2000-11-01), Bennett, III et al.
patent: 6222911 (2001-04-01), Wyllie, III
Chan Wing F.
Clark & Brody
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