3874138

Information

• Patent Grant
• 3874138

• References
• Source

• Patent Number

  3,874,138

• Date Filed

  Not available

• Date Issued

  Tuesday, April 1, 1975
  50 years ago

• CPC

  • E04D13/064 - Gutters
  • E04D1/08 - of plastics of asphalt; of fibrous materials
  • E04D1/30 - Special roof-covering elements
  • E04D1/36 - Devices for sealing the spaces or joints between roof-covering elements
  • E04D13/0445 - Drainage channels
  • E04D2001/305 - Ridge or hip tiles
  • E04D2001/307 - for passages in the roof surface
  • E04D2013/0454 - at the intersection of roof surfaces

• US Classifications

  • 052 - Static structures
  • 454 - Ventilation