3539870

Information

• Patent Grant
• 3539870

• References
• Source

• Patent Number

  3,539,870

• Date Filed

  Not available

• Date Issued

  Tuesday, November 10, 1970
  54 years ago

• CPC

  • H02H7/20 - for electronic equipment
  • H03F1/54 - with tubes only

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 307 - Electrical transmission or interconnection systems