2311544

Information

• Patent Grant
• 2311544

• References
• Source

• Patent Number

  2,311,544

• Date Filed

  Not available

• Date Issued

  Tuesday, February 16, 1943
  82 years ago

• CPC

  • E06C5/20 - using hand-power

• US Classifications

  • 182 - Fire escape, ladder, or scaffold