3138741

Information

• Patent Grant
• 3138741

• References
• Source

• Patent Number

  3,138,741

• Date Filed

  Not available

• Date Issued

  Tuesday, June 23, 1964
  60 years ago

• CPC

  • E21F17/06 - Distributing electric power Cable networks Conduits for cables
  • E21F9/00 - Devices preventing sparking of machines or apparatus
  • G01N25/36 - for investigating the composition of gas mixtures

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 299 - Mining or in situ disintegration of hard material
  • 340 - Communications: electrical