H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
344/52
H04Q 3/68 (2006.01) H05K 7/14 (2006.01)
Patent
CA 1285055
ABSTRACT OF THE DISCLOSURE The present invention relates to a three-stage coupling arrangement for an electrical data exchange system in which coupling matrixes of all stages are constructed identically. The coupling matrixes are divided among two switchboards. The number of inputs of a coupling matrix is equal to the number of its outputs and the inputs and outputs of the first switchboard are connected with the identically numbered inputs and outputs, respectively, of the second switchboard.
533544
Ant Nachrichtentechnik G.m.b.h.
Fetherstonhaugh & Co.
Schomers Josef
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