1437590

Information

• Patent Grant
• 1437590

• References
• Source

• Patent Number

  1,437,590

• Date Filed

  Not available

• Date Issued

  Tuesday, December 5, 1922
  102 years ago

• CPC

  • B41F1/60 - Safety devices

• US Classifications

  • 101 - Printing
  • 049 - Movable or removable closures
  • 182 - Fire escape, ladder, or scaffold