540643

Information

• Patent Grant
• 540643

• References
• Source

• Patent Number

  540,643

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1895
  129 years ago

• CPC

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

• US Classifications

  • 182 - Fire escape, ladder, or scaffold
  • 248 - Supports