1779423

Information

• Patent Grant
• 1779423

• References
• Source

• Patent Number

  1,779,423

• Date Filed

  Not available

• Date Issued

  Tuesday, October 28, 1930
  94 years ago

• CPC

  • H01H47/18 - for introducing delay in the operation of the relay
  • H01H50/74 - Mechanical means for producing a desired natural frequency of operation of the contacts
  • H01H50/88 - Mechanical means

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 246 - Railway switches and signals
  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets