1728404

Information

• Patent Grant
• 1728404

• References
• Source

• Patent Number

  1,728,404

• Date Filed

  Not available

• Date Issued

  Tuesday, September 17, 1929
  95 years ago

• CPC

  • B64B1/26 - housed in ducts

• US Classifications

  • 244 - Aeronautics and astronautics