3820912

Information

• Patent Grant
• 3820912

• References
• Source

• Patent Number

  3,820,912

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • E01C9/02 - Wheel tracks
  • B63B27/143 - Ramps
  • E01B25/28 - Rail tracks for guiding vehicles when running on road or similar surface
  • Y10T428/18 - Longitudinally sectional layer of three or more sections
  • Y10T428/192 - Sheets or webs coplanar

• US Classifications

  • 404 - Road structure, process, or apparatus
  • 014 - Bridges
  • 428 - Stock material or miscellaneous articles