3711621

Information

• Patent Grant
• 3711621

• References
• Source

• Patent Number

  3,711,621

• Date Filed

  Not available

• Date Issued

  Tuesday, January 16, 1973
  52 years ago

• CPC

  • H01B7/288 - using hygroscopic material or material swelling in the presence of liquid
  • H01B7/202 - Longitudinal lapped metal tubes

• US Classifications

  • 174 - Electricity: conductors and insulators