2721471

Information

• Patent Grant
• 2721471

• References
• Source

• Patent Number

  2,721,471

• Date Filed

  Not available

• Date Issued

  Tuesday, October 25, 1955
  69 years ago

• CPC

  • E04B2/842 - by projecting or otherwise applying hardenable masses to the exterior of a form leaf
  • E04B2/723 - constituted of gypsum elements
  • E04B2002/7488 - Details of wiring

• US Classifications

  • 052 - Static structures