2620521

Information

• Patent Grant
• 2620521

• References
• Source

• Patent Number

  2,620,521

• Date Filed

  Not available

• Date Issued

  Tuesday, December 9, 1952
  72 years ago

• CPC

  • E06B3/825 - with a wooden frame
  • E06B3/984 - specially adapted for frame members of wood or other material worked in a similar way
  • E06B2003/7025 - of cork; of wood or similar fibres
  • E06B2003/7094 - with ventilated innerspace

• US Classifications

  • 052 - Static structures
  • D25 - Building units and construction elements