2400680

Information

• Patent Grant
• 2400680

• References
• Source

• Patent Number

  2,400,680

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1946
  78 years ago

• CPC

  • A43B7/226 - characterised by the material
  • A43B7/22 - Footwear with fixed flat-foot insertions, metatarsal supports, ankle flaps, or the like
  • A43B7/223 - characterised by the constructive form
  • Y10T29/49609 - Spring making

• US Classifications

  • 036 - Boots, shoes, and leggings
  • 012 - Boot and shoe making
  • 029 - Metal working
  • 267 - Spring devices