302463

Information

• Patent Grant
• 302463

• References
• Source

• Patent Number

  302,463

• Date Filed

  Not available

• Date Issued

  Tuesday, July 22, 1884
  140 years ago

• CPC

  • F24F7/02 - Roof ventilation
  • A62B29/00 - Devices
  • E04H9/14 - against other dangerous influences

• US Classifications

  • 454 - Ventilation
  • 052 - Static structures
  • 209 - Classifying, separating, and assorting solids