1837424

Information

• Patent Grant
• 1837424

• References
• Source

• Patent Number

  1,837,424

• Date Filed

  Not available

• Date Issued

  Tuesday, December 22, 1931
  93 years ago

• CPC

  • B42F13/16 - with claws or rings
  • B42D5/043 - Supports for desk-type calendars or diaries
  • B42P2241/24 - Means for facilitating stacking or packaging

• US Classifications

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