2660878

Information

• Patent Grant
• 2660878

• References
• Source

• Patent Number

  2,660,878

• Date Filed

  Not available

• Date Issued

  Tuesday, December 1, 1953
  71 years ago

• CPC

  • E04B2/28 - Walls having cavities between, but not in, the elements Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid
  • E04B2002/0295 - of which the width is equal to the wall thickness

• US Classifications

  • 052 - Static structures
  • 425 - Plastic article or earthenware shaping or treating: apparatus