2152988

Information

• Patent Grant
• 2152988

• References
• Source

• Patent Number

  2,152,988

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1939
  85 years ago

• CPC

  • C03C3/091 - containing aluminium
  • F16L13/122 - for male-female connections
  • H01J61/302 - characterised by the material of the vessel

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 501 - Compositions: ceramic