2145504

Information

• Patent Grant
• 2145504

• References
• Source

• Patent Number

  2,145,504

• Date Filed

  Not available

• Date Issued

  Tuesday, January 31, 1939
  85 years ago

• CPC

  • E04D15/00 - Apparatus or tools for roof working
  • Y10T24/3441 - and cam

• US Classifications

  • 052 - Static structures
  • 024 - Buckles, buttons, clasps, etc.
  • 182 - Fire escape, ladder, or scaffold