Chain trencher

Chain trencher having head shaft wear plates

Change-over valve for boom cylinder of excavating/slewing...

Changeable and retractable implement for use on a back hoe and m

Channel data CRC systems for use with cross connect equipment

Channel quality

Channel switching system

Channel switching system for use in a digital communication syst

Channel-initiated retry and unit check for peripheral devices

Character snychronization

Check bit code circuit for simultaneous single bit error correct

Check system for a control board

Checkboard memory self-test

Checking data integrity in buffered data transmission

Checking programmed controller operation

Checking sequential logic circuits

Checkpoint retry mechanism

Checkpointing mechanism for fault-tolerant systems

Checksum calculation unit and method for error detection on data

Checksum determination using parallel computations on multiple p