Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • 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
• • 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
  • H04M1/274—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
  • H04M1/278—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 punched cards or tapes

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Alarm Systems (AREA)
• Fire Alarms (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=8678419

Family Applications (1)

Country Status (3)

• 0
  • BE BE382324D patent/BE382324A/xx unknown
• 1930
  • 1930-08-29 FR FR717701D patent/FR717701A/fr not_active Expired
• 1931
  • 1931-08-31 GB GB24477/31A patent/GB361827A/en not_active Expired
  • 1931-11-13 FR FR41644D patent/FR41644E/fr not_active Expired
• 1932
  • 1932-02-19 FR FR42348D patent/FR42348E/fr not_active Expired

Also Published As

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