| http://www.w3.org/ns/prov#value | - With assembly 10 generally described in the above manner, attention is now directed to the various detailed circuits making up the assembly and particularly FIG. 4 which illustrates one embodiment of that portion of signal timing circuit 34 which is responsible for producing the aforestated signals, I-ILEAD I-ILEAD, HTRAIL, and I-ITRAIL. Generally speaking, this circuit includes a pair of accurate
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