3727321

Information

• Patent Grant
• 3727321

• References
• Source

• Patent Number

  3,727,321

• Date Filed

  Not available

• Date Issued

  Tuesday, April 17, 1973
  51 years ago

• CPC

  • A45D20/24 - Shape or structure of the helmet body
  • A45D20/18 - Flexible caps with provision for hot air supply

• US Classifications

  • 034 - Drying and gas or vapor contact with solids