|
US4569043A
|
|
Arrangement for interfacing the space stage to the time stages of a T-S-T digital switching system
|
|
US4723204A
|
|
Dynamic RAM refresh circuit
|
|
US4596015A
|
|
Failure detection apparatus for use with digital pads
|
|
CA1217842A
|
|
Failure detection apparatus for use with digital pads
|
|
US4532382A
|
|
Power supply for telephone equipment memory devices
|
|
US4552997A
|
|
Arrangement for loop analysis testing for a digital switching system
|
|
US4551585A
|
|
Arrangement for facilitating external loop analysis testing for a digital switching system
|
|
US4516237A
|
|
Remote data link controller having multiple data link handling capabilities
|
|
US4594713A
|
|
Remote data link receive data reformatter
|
|
US4538272A
|
|
Prioritized clock selection circuit
|
|
US4594712A
|
|
Remote data link transmit data formatter
|
|
US4564937A
|
|
Remote data link address sequencer and a memory arrangement for accessing and storing digital data
|
|
US4513233A
|
|
Pulse monitor circuit for use as a fan speed monitor
|
|
US4569017A
|
|
Duplex central processing unit synchronization circuit
|
|
US4598404A
|
|
Data format arrangement for communication between the peripheral processors of a telecommunications switching network
|
|
US4561046A
|
|
Single transistor forward converter with lossless magnetic core reset and snubber network
|
|
US4539070A
|
|
Exposure of photo resist
|
|
US4597618A
|
|
Stabilized array pin connector
|
|
US4553088A
|
|
Wiring pair reversal detector
|
|
US4535533A
|
|
Cable connector seating tool
|
