3517770

Information

• Patent Grant
• 3517770

• References
• Source

• Patent Number

  3,517,770

• Date Filed

  Not available

• Date Issued

  Tuesday, June 30, 1970
  54 years ago

• CPC

  • E06C1/383 - Foldable ladders in which the longitudinal members are brought together on folding
  • E04F11/06 - collapsible
  • E06C7/081 - Rungs or other treads comprising anti-slip features
  • E06C9/085 - ladders unfolded in the direction of the longitudinal members

• US Classifications

  • 182 - Fire escape, ladder, or scaffold