04777488 is referenced by 38 patents and cites 13 patents.

In the service request communication system disclosed herein, a plurality of battery-powered table units communicate a variety of service requests to a central server or master unit by a bi-directional wireless radio frequency data link. The table units remain in a low-power "sleep" state until any one of a plurality of switches is actuated by a customer to denote a corresponding service request. A transceiver is controlled by a microprocessor to transmit a coded signal identifying the request and then to receive and indicate to the customer an acknowledgment signal transmitted from the server or master station. At a server station a display is operated to identify the table unit/request combination, the display being canceled when a corresponding switch at the server unit is actuated, e.g. by the employee who will provide the service requested.

Title
Restaurant service request communications system
Application Number
6/864291
Publication Number
4777488
Application Date
May 16, 1986
Publication Date
October 11, 1988
Inventor
Robert K Waite Jr
Groton
MA, US
Philip L Carlman Jr
Beverly
MA, US
Agent
Henry D Pahl Jr
Assignee
CW Products
MA, US
IPC
G05B 23/02
H04B 1/16
H04Q 7/00
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