2664977

Information

• Patent Grant
• 2664977

• References
• Source

• Patent Number

  2,664,977

• Date Filed

  Not available

• Date Issued

  Tuesday, January 5, 1954
  71 years ago

• CPC

  • E04C3/30 - Columns Pillars Struts
  • E21D15/52 - Extensible units located above or below standard props

• US Classifications

  • 052 - Static structures
  • 254 - Implements or apparatus for applying pushing or pulling force
  • 405 - Hydraulic and earth engineering