3634992

Information

• Patent Grant
• 3634992

• References
• Source

• Patent Number

  3,634,992

• Date Filed

  Not available

• Date Issued

  Tuesday, January 18, 1972
  53 years ago

• CPC

  • E06B3/22 - Hollow frames
  • E06B1/18 - composed of several parts with respect to the cross-section of the frame itself
  • E06B1/28 - Hollow frames

• US Classifications

  • 052 - Static structures