Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
  • H01H36/0006—Permanent magnet actuating reed switches
  • H01H36/004—Permanent magnet actuating reed switches push-button-operated, e.g. for keyboards
• • 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
  • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
• • 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
  • H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of dc signals of alternating polarity, coded pulses or impedance dialling

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Push-Button Switches (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=25993908

Family Applications (2)

Family Applications After (1)

Country Status (3)

Families Citing this family (3)

Family Cites Families (2)

• 0
  • NL NL249801D patent/NL249801A/xx unknown
  • NL NL249668D patent/NL249668A/xx unknown
• 1959
  • 1959-03-21 DE DEST14910A patent/DE1082629B/de active Pending
  • 1959-03-26 DE DEST14938A patent/DE1086281B/de active Pending
• 1960
  • 1960-03-18 GB GB966660A patent/GB935474A/en not_active Expired

Also Published As

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