3574985

Information

• Patent Grant
• 3574985

• References
• Source

• Patent Number

  3,574,985

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1971
  53 years ago

• CPC

  • E04D3/3601 - of roof covering supported by the roof structure with interposition of a insulating layer
  • E04D3/366 - by closing the space between the slabs or sheets by gutters, bulges, or bridging elements
  • E04D13/1625 - with means for supporting the insulating material between the purlins or rafters
  • E04D2003/3617 - with locking or snapping edges located in the thickness of the slab or sheet

• US Classifications

  • 052 - Static structures