AUTOMATIC SWITCHING SYSTEM COMPRISING DIRECT AND MUTUAL-AID ROUTES BETWEEN SELECTION UNITS
United States Patent 3454723
US Patent References:
Telephone system
- - 2227488
Automatic telecommunication switching systems
- - 3211836
Automatic telecommunication switching systems
- - 3272924
Telephone system
- - 2227488
Automatic telecommunication switching systems
- - 3211836
Automatic telecommunication switching systems
- - 3272924
Inventors:
Lucas, Pierre M.
Duquesne, Jean F.
Gall, Pierre LE.
Rouzier, Michel M.
Duquesne, Jean F.
Gall, Pierre LE.
Rouzier, Michel M.
Publication Date:
07/08/1969
View Patent Images:
Export Citation:
Assignee:
Lucas, Pierre M.
Jean, Duquesne F.
Pierre, Gall LE.
Michel, Rouzier M.
Jean, Duquesne F.
Pierre, Gall LE.
Michel, Rouzier M.
Primary Class:
Other Classes:
379/275, 379/272
International Classes:
H04Q3/545; H04M3/00