1801904

Information

• Patent Grant
• 1801904

• References
• Source

• Patent Number

  1,801,904

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1931
  93 years ago

• CPC

  • E04G1/151 - Platforms made of wood, with or without reinforcements

• US Classifications

  • 182 - Fire escape, ladder, or scaffold