Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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Filing date
Publication date
Application filed by Le Materiel Telephonique Thomson CSFfiledCriticalLe Materiel Telephonique Thomson CSF
Application grantedgrantedCritical
Publication of FR690619ApublicationCriticalpatent/FR690619A/en
H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
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Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
FR690619D1929-05-061929-05-06
Electrical system for alarm signals
ExpiredFR690619A
(en)