1565681

Information

• Patent Grant
• 1565681

• References
• Source

• Patent Number

  1,565,681

• Date Filed

  Not available

• Date Issued

  Tuesday, December 15, 1925
  99 years ago

• CPC

  • E03B3/20 - of elements of special shape

• US Classifications

  • 052 - Static structures
  • 182 - Fire escape, ladder, or scaffold