3631640

Information

• Patent Grant
• 3631640

• References
• Source

• Patent Number

  3,631,640

• Date Filed

  Not available

• Date Issued

  Tuesday, January 4, 1972
  52 years ago

• CPC

  • E04B2/822 - Elastic connections
  • E04B2/7845 - of curved cross-section

• US Classifications

  • 052 - Static structures
  • 211 - Supports: racks
  • 248 - Supports