2637921

Information

• Patent Grant
• 2637921

• References
• Source

• Patent Number

  2,637,921

• Date Filed

  Not available

• Date Issued

  Tuesday, May 12, 1953
  71 years ago

• CPC

  • E06B11/02 - Gates Doors
  • Y10S16/07 - Door opening apparatus

• US Classifications

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