1838649

Information

• Patent Grant
• 1838649

• References
• Source

• Patent Number

  1,838,649

• Date Filed

  Not available

• Date Issued

  Tuesday, December 29, 1931
  93 years ago

• CPC

  • D04B11/20 - with colour patterns
  • A61F9/028 - Ventilation means

• US Classifications

  • 002 - Apparel