"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
|4844475||Electronic interactive game apparatus in which an electronic station responds to play of a human|
Interactive game apparatus is disclosed which includes one or more photosensitive weapon devices which can interact with a coded video display and with each other to provide two-way interaction, where each weapon may score against an opponent and may be h...
|4823914||Status line monitoring system and method of using same|
A monitor system for use with a plurality of segregated groups of controls, each group having corresponding status control lines indicative of the operational status of an elevator, an escalator, or the like. The monitor system includes a series of monito...