1439434

Information

• Patent Grant
• 1439434

• References
• Source

• Patent Number

  1,439,434

• Date Filed

  Not available

• Date Issued

  Tuesday, December 19, 1922
  101 years ago

• CPC

  • E04D1/265 - the roofing elements being rigid
  • E04D1/30 - Special roof-covering elements
  • E04D2001/304 - at roof intersections
  • E04D2013/0454 - at the intersection of roof surfaces

• US Classifications

  • 052 - Static structures