1397221

Information

• Patent Grant
• 1397221

• References
• Source

• Patent Number

  1,397,221

• Date Filed

  Not available

• Date Issued

  Tuesday, November 15, 1921
  104 years ago

• CPC

  • E06B3/44 - Vertically-sliding wings
  • Y10T16/63 - Cord and counterweight
  • Y10T16/67 - Hooks

• US Classifications

  • 049 - Movable or removable closures
  • 016 - Miscellaneous hardware