3656631

Information

• Patent Grant
• 3656631

• References
• Source

• Patent Number

  3,656,631

• Date Filed

  Not available

• Date Issued

  Tuesday, April 18, 1972
  52 years ago

• CPC

  • B66C23/20 - with supporting couples provided by walls of buildings or like structures
  • B66C23/32 - Self-hoisting cranes

• US Classifications

  • 212 - Traversing hoists
  • 182 - Fire escape, ladder, or scaffold