2568490

Information

• Patent Grant
• 2568490

• References
• Source

• Patent Number

  2,568,490

• Date Filed

  Not available

• Date Issued

  Tuesday, September 18, 1951
  73 years ago

• CPC

  • E04F13/0823 - piercing the side faces of the covering elements

• US Classifications

  • 052 - Static structures