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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of FR475417ApublicationCriticalpatent/FR475417A/fr
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
Landscapes
Engineering & Computer Science
(AREA)
Signal Processing
(AREA)
Fire Alarms
(AREA)
Alarm Systems
(AREA)
FR475417A1914-07-18Perfectionnements aux systèmes téléphoniques
ExpiredFR475417A
(fr)