1644223

Information

• Patent Grant
• 1644223

• References
• Source

• Patent Number

  1,644,223

• Date Filed

  Not available

• Date Issued

  Tuesday, October 4, 1927
  97 years ago

• CPC

  • E06B3/36 - with a single vertical axis of rotation at one side of the opening, or swinging through the opening
  • E05C17/045 - Hinges for the movable bar
  • E06B3/325 - Wings opening towards the outside
  • E06B3/12 - of metal

• US Classifications

  • 049 - Movable or removable closures