Title:
AUTOMATIC SWITCHING SYSTEM COMPRISING DIRECT AND MUTUAL-AID ROUTES BETWEEN SELECTION UNITS
United States Patent 3454723
Inventors:
Lucas, Pierre M.
Duquesne, Jean F.
Gall, Pierre LE.
Rouzier, Michel M.
Publication Date:
07/08/1969
Assignee:
Lucas, Pierre M.
Jean, Duquesne F.
Pierre, Gall LE.
Michel, Rouzier M.
Other Classes:
379/272, 379/275
International Classes:
H04Q3/545; H04Q3/545; (IPC1-7): H04M3/00