2227020

Information

• Patent Grant
• 2227020

• References
• Source

• Patent Number

  2,227,020

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1940
  84 years ago

• CPC

  • H01J29/58 - Arrangements for focusing or reflecting ray or beam
  • E01C7/085 - Aggregate or filler materials therefor; Coloured reflecting or luminescent additives therefor
  • E01C7/182 - Aggregate or filler materials, except those according to E01C7/26
  • E01C7/351 - with exclusively hydraulical binders; Aggregate, fillers or other additives for application on or in the surface of toppings with exclusively hydraulic binders
  • E01F9/506 - characterised by the road surface marking material

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 313 - Electric lamp and discharge devices