3828448

Information

• Patent Grant
• 3828448

• References
• Source

• Patent Number

  3,828,448

• Date Filed

  Not available

• Date Issued

  Tuesday, August 13, 1974
  50 years ago

• CPC

  • A43B5/0441 - by lifting the insole

• US Classifications

  • 036 - Boots, shoes, and leggings