1930138

Information

• Patent Grant
• 1930138

• References
• Source

• Patent Number

  1,930,138

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1933
  91 years ago

• CPC

  • E06B5/125 - Closures for relieving excess pressure inside the building
  • E06B5/12 - against air pressure, explosion, or gas
  • F16K17/1626 - with additional cutting means

• US Classifications

  • 160 - Flexible or portable closure, partition, or panel
  • 220 - Receptacles