383731

Information

• Patent Grant
• 383731

• References
• Source

• Patent Number

  383,731

• Date Filed

  Not available

• Date Issued

  Tuesday, May 29, 1888
  136 years ago

• CPC

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

• US Classifications

  • 182 - Fire escape, ladder, or scaffold