3680711

Information

• Patent Grant
• 3680711

• References
• Source

• Patent Number

  3,680,711

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1972
  52 years ago

• CPC

  • A47H1/08 - extensible
  • B60P7/15 - the load bracing means comprising a movable bar
  • E04B9/122 - one member passing through the other member, both members laying at least partly in the same plane
  • E04C3/005 - Girders or columns that are rollable, collapsible or otherwise adjustable in length or height

• US Classifications

  • 211 - Supports: racks
  • 052 - Static structures