2421417

Information

• Patent Grant
• 2421417

• References
• Source

• Patent Number

  2,421,417

• Date Filed

  Not available

• Date Issued

  Tuesday, June 3, 1947
  77 years ago

• CPC

  • E04D1/34 - Fastenings for attaching roof-covering elements to the supporting elements
  • E04D2001/3423 - Nails, rivets, staples or straps piercing or perforating the roof covering material
  • E04D2001/3464 - on the lateral corners of the roof covering elements for diagonally tiled roofs
  • E04D2001/3467 - through apertures, holes or slots
  • E04D2001/3479 - the fastening means taking hold directly on adjacent elements of the same row and fastening them only to each other
  • E04D2001/3485 - the fastening means taking hold directly on elements of succeeding rows and fastening them only to each other
  • E04D2001/3491 - made of flexible material
  • E04D2001/3494 - made of rigid material having a flat external surface

• US Classifications

  • 052 - Static structures