3817009

Information

• Patent Grant
• 3817009

• References
• Source

• Patent Number

  3,817,009

• Date Filed

  Not available

• Date Issued

  Tuesday, June 18, 1974
  50 years ago

• CPC

  • E04D13/17 - Ventilation of roof coverings not otherwise provided for
  • E04D13/143 - with ventilating means in junctions of roof sheathings to parts extending above the roof

• US Classifications

  • 052 - Static structures