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5627830 |
Method and apparatus for transmitting information for multiple independent users in a communication system
An RF cellular communication system employing offset frame synchronization between cells, any cell being omni-directional or directional, such that a frame at one cell is offset by an integral...
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5228029 |
Cellular TDM communication system employing offset frame synchronization
An RF cellular TDM communication system employing offset frame synchronization between cells, any cell being omni-directional or directional, such that a frame at one cell is offset by an integral...
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3969638 |
Integrated circuit breaker
An integrated circuit for the selective completion and interruption of a signal path comprises three transistors of the MOSFET type, i.e., a switching transistor in tandem with a decoupling...
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3870828 |
SUPERIMPOSED BINARY SIGNAL
Superimposed channel signalling device to transmit control functions by superimposing supervisory or secondary channel signals with high speed primary channel signals comprising signal...
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3639693 |
TIME DIVISION MULTIPLEX DATA SWITCH
A time division multiplex data switch wherein any one of a plurality of input channels forming a plurality of input groups may be switched to any one of a plurality of output channels forming a...
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3622705 |
TELECOMMUNICATION SWITCHING SYSTEMS
A time division multiplex communication switching system employing pulse code modulation in which a connection between any two channels is effected by connecting the first channel to all available...
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