1256964

Information

• Patent Grant
• 1256964

• References
• Source

• Patent Number

  1,256,964

• Date Filed

  Not available

• Date Issued

  Tuesday, February 19, 1918
  107 years ago

• CPC

  • E06C5/22 - by, or with the assistance of, springs

• US Classifications

  • 182 - Fire escape, ladder, or scaffold