2043988

Information

• Patent Grant
• 2043988

• References
• Source

• Patent Number

  2,043,988

• Date Filed

  Not available

• Date Issued

  Tuesday, June 16, 1936
  88 years ago

• CPC

  • E04B1/86 - slab-shaped
  • E04B2001/747 - Corrugated materials
  • E04B2001/8414 - with non-planar face
  • E04B2001/8438 - Slot shaped holes
  • E04B2001/8452 - with peripheral frame members
  • E04B2001/8461 - layered
  • E04B2001/8471 - with non-planar interior transition surfaces between layers
  • E04B2001/8485 - the opening being restricted
  • Y10S138/04 - Air conditioning
  • Y10T428/24281 - Struck out portion type
  • Y10T428/24322 - Composite web or sheet
  • Y10T428/24355 - Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
  • Y10T428/24661 - Forming, or cooperating to form cells
  • Y10T428/24694 - Parallel corrugations
  • Y10T428/24711 - Plural corrugated components
  • Y10T428/24727 - with planar component

• US Classifications

  • 181 - Acoustics
  • 428 - Stock material or miscellaneous articles