3420331

Information

• Patent Grant
• 3420331

• References
• Source

• Patent Number

  3,420,331

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1969
  56 years ago

• CPC

  • F16L3/015 - using articulated- or supple-guiding elements
  • B66F11/044 - Working platforms suspended from booms
  • B66F13/005 - Thrust chain devices

• US Classifications

  • 182 - Fire escape, ladder, or scaffold
  • 014 - Bridges
  • 052 - Static structures