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TECH TELECOMMUNICATIONS ET
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TECH TELECOMMUNICATIONS ET
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Application filed by TECH TELECOMMUNICATIONS ETfiledCriticalTECH TELECOMMUNICATIONS ET
Priority to FR7414719ApriorityCriticalpatent/FR2269253A1/fr
Publication of FR2269253A1publicationCriticalpatent/FR2269253A1/fr
Application grantedgrantedCritical
Publication of FR2269253B3publicationCriticalpatent/FR2269253B3/fr
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
H04M1/274—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc
H04M1/276—Devices whereby a plurality of signals may be stored simultaneously with provision for storing more than one subscriber number at a time, e.g. using toothed disc using magnetic recording, e.g. on tape
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
Arrangements For Transmission Of Measured Signals
(AREA)
FR7414719A1974-04-261974-04-26Magnetic drum recorder for dialling codes - uses stepping-motor with circumferential tracks with common starting datum
GrantedFR2269253A1
(en)
