1594921

Information

• Patent Grant
• 1594921

• References
• Source

• Patent Number

  1,594,921

• Date Filed

  Not available

• Date Issued

  Tuesday, August 3, 1926
  99 years ago

• CPC

  • E21D5/11 - with combinations of different materials

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 049 - Movable or removable closures
  • 052 - Static structures
  • 160 - Flexible or portable closure, partition, or panel
  • 454 - Ventilation