2890642

Information

• Patent Grant
• 2890642

• References
• Source

• Patent Number

  2,890,642

• Date Filed

  Not available

• Date Issued

  Tuesday, June 16, 1959
  65 years ago

• CPC

  • E04D13/1471 - using a hinge mechanism for adaptation to the inclined roof
  • F23L17/12 - Devices for fastening the top or terminal to chimney, shaft, or flue
  • Y10T29/49922 - by bending over projecting prongs

• US Classifications

  • 454 - Ventilation
  • 029 - Metal working
  • 138 - Pipes and tubular conduits
  • 285 - Pipe joints or couplings