230000014759maintenance of locationEffects0.000description1
239000011435rockSubstances0.000description1
Classifications
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04M—TELEPHONIC COMMUNICATION
H04M1/00—Substation equipment, e.g. for use by subscribers
H04M1/26—Devices for calling a subscriber
H04M1/27—Devices whereby a plurality of signals may be stored simultaneously
H04M1/272—Devices whereby a plurality of signals may be stored simultaneously with provision for storing only one subscriber number at a time, e.g. by keyboard or dial
Dispositif indicateur d'une manoeuvre aller et retour d'un element mobile, et dispositif de verrouillage equipe d'un tel dispositif indicateur