2021604

Information

• Patent Grant
• 2021604

• References
• Source

• Patent Number

  2,021,604

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1935
  89 years ago

• CPC

  • E06B3/44 - Vertically-sliding wings
  • E06B2003/4453 - Metal
  • Y10T16/706 - Casings

• US Classifications

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