3211990

Information

• Patent Grant
• 3211990

• References
• Source

• Patent Number

  3,211,990

• Date Filed

  Not available

• Date Issued

  Tuesday, October 12, 1965
  59 years ago

• CPC

  • G05F1/147 - with motor driven tap switch
  • B23K11/251 - using analog means

• US Classifications

  • 323 - Electricity: power supply or regulation systems
  • 318 - Electricity: motive power systems