3509404

Information

• Patent Grant
• 3509404

• References
• Source

• Patent Number

  3,509,404

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1970
  54 years ago

• CPC

  • H01H33/6646 - having non flat disc-like contact surface
  • H01H33/6642 - having cup-shaped contacts, the cylindrical wall of which being provided with inclined slits to form a coil
  • H01H33/6645 - in which the coil like electrical connections encircle at least once the contact rod

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 218 - High-voltage switches with arc preventing or extinguishing devices