1828021

Information

• Patent Grant
• 1828021

• References
• Source

• Patent Number

  1,828,021

• Date Filed

  Not available

• Date Issued

  Tuesday, October 20, 1931
  93 years ago

• CPC

  • E05F11/145 - by pin and slot

• US Classifications

  • 049 - Movable or removable closures