2820535

Information

• Patent Grant
• 2820535

• References
• Source

• Patent Number

  2,820,535

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1958
  67 years ago

• CPC

  • E04F13/0864 - composed of superposed elements which overlap each other and of which the flat outer surface includes an acute angle with the surface to cover
  • E04F13/0848 - specially adapted for thin sheet-like materials

• US Classifications

  • 052 - Static structures