2885567

Information

• Patent Grant
• 2885567

• References
• Source

• Patent Number

  2,885,567

• Date Filed

  Not available

• Date Issued

  Tuesday, May 5, 1959
  65 years ago

• CPC

  • H03F1/542 - Replacing by standby devices
  • H04B1/74 - for increasing reliability
  • Y10T307/615 - Substitute or emergency source

• US Classifications

  • 307 - Electrical transmission or interconnection systems
  • 340 - Communications: electrical