3509266

Information

• Patent Grant
• 3509266

• References
• Source

• Patent Number

  3,509,266

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1970
  55 years ago

• CPC

  • H01B9/0611 - Oil-pressure cables
  • H01B7/29 - Protection against damage caused by extremes of temperature or by flame
  • H01B7/292 - using material resistant to heat
  • H01B7/428 - Heat conduction
  • H02G9/02 - laid directly in or on the ground, river-bed or sea-bottom Coverings therefor
  • H02G9/06 - in underground tubes or conduits Tubes or conduits therefor

• US Classifications

  • 174 - Electricity: conductors and insulators
  • 138 - Pipes and tubular conduits