2269488

Information

• Patent Grant
• 2269488

• References
• Source

• Patent Number

  2,269,488

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1942
  84 years ago

• CPC

  • B64D13/02 - the air being pressurised
  • B64D2700/62035 - Pressure control valves

• US Classifications

  • 049 - Movable or removable closures
  • 109 - Safes, bank protection, or a related device