1957821

Information

• Patent Grant
• 1957821

• References
• Source

• Patent Number

  1,957,821

• Date Filed

  Not available

• Date Issued

  Tuesday, May 8, 1934
  90 years ago

• CPC

  • H01K1/465 - with means to prevent loosening or unauthorised removal of the lamp

• US Classifications

  • 439 - Electrical connectors
  • 313 - Electric lamp and discharge devices