3378979

Information

• Patent Grant
• 3378979

• References
• Source

• Patent Number

  3,378,979

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1968
  56 years ago

• CPC

  • B21D47/005 - Making gratings
  • E04C2/421 - made of bar-like elements
  • E06B9/01 - Grilles fixed to walls, doors, or windows Grilles moving with doors or windows Walls formed as grilles

• US Classifications

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