3355558

Information

• Patent Grant
• 3355558

• References
• Source

• Patent Number

  3,355,558

• Date Filed

  Not available

• Date Issued

  Tuesday, November 28, 1967
  57 years ago

• CPC

  • H04M1/23 - Construction or mounting of dials or of equivalent devices Means for facilitating the use thereof
  • H01H13/72 - wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position
  • H04M1/515 - by generating or selecting other signals than trains of pulses of similar shape or other signals than currents of one or more different frequencies
  • Y10T74/20238 - Interlocked

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 074 - Machine element or mechanism
  • 379 - Telephonic communications