1411497

Information

• Patent Grant
• 1411497

• References
• Source

• Patent Number

  1,411,497

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1922
  102 years ago

• CPC

  • G04C21/32 - giving indications at a number of places each at a different time
  • Y10T307/951 - With time delay or retardation means

• US Classifications

  • 307 - Electrical transmission or interconnection systems
  • 200 - Electricity: circuit makers and breakers
  • 340 - Communications: electrical
  • 968 - Horology