1487657

Information

• Patent Grant
• 1487657

• References
• Source

• Patent Number

  1,487,657

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1924
  100 years ago

• CPC

  • H01K3/22 - Exhausing, degassing, filling, or cleaning vessels
  • H01K1/36 - Seals between parts of vessel

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 141 - Fluent material handling, with receiver or receiver coacting means
  • 220 - Receptacles