Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M1/00—Substation equipment, e.g. for use by subscribers
  • H04M1/02—Constructional features of telephone sets
  • H04M1/04—Supports for telephone transmitters or receivers
  • H04M1/06—Hooks; Cradles
• • 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
  • H04M1/30—Devices which can set up and transmit only one digit at a time
  • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
  • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Alarm Systems (AREA)
• Telephone Function (AREA)
• Monitoring And Testing Of Exchanges (AREA)
• Table Equipment (AREA)
• Interface Circuits In Exchanges (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=5975710

Family Applications (1)

Country Status (7)

• 1976
  • 1976-04-17 DE DE2617093A patent/DE2617093C2/de not_active Expired
• 1977
  • 1977-03-15 AT AT176277A patent/AT351608B/de not_active IP Right Cessation
  • 1977-04-04 NO NO771193A patent/NO141581C/no unknown
  • 1977-04-12 SE SE7704190A patent/SE414105B/xx not_active IP Right Cessation
  • 1977-04-13 FI FI771160A patent/FI62440C/fi not_active IP Right Cessation
  • 1977-04-14 CH CH465677A patent/CH616796A5/de not_active IP Right Cessation
  • 1977-04-15 DK DK168077A patent/DK168077A/da not_active IP Right Cessation

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