2509558

Information

• Patent Grant
• 2509558

• References
• Source

• Patent Number

  2,509,558

• Date Filed

  Not available

• Date Issued

  Tuesday, May 30, 1950
  75 years ago

• CPC

  • E01C5/22 - made of units composed of a mixture of materials covered by two or more of groups E01C5/008 , E01C5/02 - E01C5/20 except embedded reinforcing materials
  • E01C5/005 - Individual couplings or spacer elements for joining the prefabricated units
  • G09F19/22 - Advertising or display means on roads, walls, or similar surfaces
  • Y10T70/10 - Miscellaneous

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 070 - Locks
  • 404 - Road structure, process, or apparatus