3792544

Information

• Patent Grant
• 3792544

• References
• Source

• Patent Number

  3,792,544

• Date Filed

  Not available

• Date Issued

  Tuesday, February 19, 1974
  50 years ago

• CPC

  • H04M1/21 - Combinations with auxiliary equipment
  • B42F13/165 - with flexible or resilient claws or rings

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 402 - Binder device releasably engaging aperture or notch of sheet
  • D19 - Office supplies