2887191

Information

• Patent Grant
• 2887191

• References
• Source

• Patent Number

  2,887,191

• Date Filed

  Not available

• Date Issued

  Tuesday, May 19, 1959
  65 years ago

• CPC

  • E21D17/0206 - Hydraulically operated extension devices
  • E04H12/187 - with hinged sections
  • E04H12/34 - Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
  • E21B15/00 - Derricks Masts; Other supports

• US Classifications

  • 052 - Static structures
  • 014 - Bridges