3439594

Information

• Patent Grant
• 3439594

• References
• Source

• Patent Number

  3,439,594

• Date Filed

  Not available

• Date Issued

  Tuesday, April 22, 1969
  55 years ago

• CPC

  • B01D45/12 - by centrifugal forces
  • E01C19/283 - pedestrian-controlled

• US Classifications

  • 404 - Road structure, process, or apparatus