1681798

Information

• Patent Grant
• 1681798

• References
• Source

• Patent Number

  1,681,798

• Date Filed

  Not available

• Date Issued

  Tuesday, August 21, 1928
  97 years ago

• CPC

  • E05F11/36 - specially designed for passing through a wall
  • E05F11/14 - directly, i.e. without links, shifting the wing

• US Classifications

  • 049 - Movable or removable closures