3895380

Information

• Patent Grant
• 3895380

• References
• Source

• Patent Number

  3,895,380

• Date Filed

  Not available

• Date Issued

  Tuesday, July 15, 1975
  49 years ago

• CPC

  • G09F9/307 - being incandescent filaments

• US Classifications

  • 340 - Communications: electrical
  • 040 - Card, picture, or sign exhibiting