3626439

Information

• Patent Grant
• 3626439

• References
• Source

• Patent Number

  3,626,439

• Date Filed

  Not available

• Date Issued

  Tuesday, December 7, 1971
  53 years ago

• CPC

  • E04D1/265 - the roofing elements being rigid
  • E04D1/205 - of wood
  • E04D1/365 - Sealing strips between lateral sides of roof-covering elements
  • E04D3/34 - of specified materials, or of combinations of materials, not covered by any one of groups E04D3/26 - E04D3/32
  • E04D3/40 - Slabs or sheets locally modified for auxiliary purposes

• US Classifications

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