2177905

Information

• Patent Grant
• 2177905

• References
• Source

• Patent Number

  2,177,905

• Date Filed

  Not available

• Date Issued

  Tuesday, October 31, 1939
  85 years ago

• CPC

  • B43L5/022 - with magnets

• US Classifications

  • 335 - Electricity: magnetically operated switches, magnets, and electromagnets
  • 040 - Card, picture, or sign exhibiting
  • 069 - Leather manufactures
  • 206 - Special receptacle or package
  • 211 - Supports: racks
  • 248 - Supports
  • 402 - Binder device releasably engaging aperture or notch of sheet
  • 434 - Education and demonstration