3383866

Information

• Patent Grant
• 3383866

• References
• Source

• Patent Number

  3,383,866

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1968
  56 years ago

• CPC

  • E21D17/0206 - Hydraulically operated extension devices
  • E21D23/0047 - without essential shifting devices
  • E21D23/0052 - with advancing shifting devices connected therewith
  • E21D23/0069 - without essential advancing shifting devices
  • E21D23/0409 - Aligning or guiding means for the supports or for the constitutive parts of the supports

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 248 - Supports