3649724

Information

• Patent Grant
• 3649724

• References
• Source

• Patent Number

  3,649,724

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1972
  53 years ago

• CPC

  • B64F1/007 - Helicopter portable landing pads
  • B64F1/36 - Other airport installations
  • E01C9/008 - Paving take-off areas for vertically starting aircraft
  • E01C19/52 - Apparatus for laying individual preformed surfacing elements

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 052 - Static structures
  • 244 - Aeronautics and astronautics