3751868

Information

• Patent Grant
• 3751868

• References
• Source

• Patent Number

  3,751,868

• Date Filed

  Not available

• Date Issued

  Tuesday, August 14, 1973
  51 years ago

• CPC

  • E06B3/12 - of metal
  • E05D5/023 - with parts extending through the profile wall
  • E06B1/52 - Frames specially adapted for doors
  • E06B3/9646 - using two similar connecting pieces each connected with one or the frame members and drawn together at the joint
  • E05Y2900/132 - Doors
  • E05Y2900/146 - Shutters

• US Classifications

  • 052 - Static structures
  • D25 - Building units and construction elements