2572775

Information

• Patent Grant
• 2572775

• References
• Source

• Patent Number

  2,572,775

• Date Filed

  Not available

• Date Issued

  Tuesday, October 23, 1951
  73 years ago

• CPC

  • E06C5/20 - using hand-power
  • Y10T74/18848 - with pulley

• US Classifications

  • 074 - Machine element or mechanism
  • 182 - Fire escape, ladder, or scaffold
  • 188 - Brakes