3717302

Information

• Patent Grant
• 3717302

• References
• Source

• Patent Number

  3,717,302

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1973
  51 years ago

• CPC

  • E01B9/303 - the clip being a shaped bar
  • E01B9/14 - Plugs, sleeves, thread linings, or other inserts for holes in sleepers
  • E01B9/681 - characterised by the material
  • E01B29/24 - Fixing or removing detachable fastening means or accessories thereof Pre-assembling track components by detachable fastening means
  • E01B31/26 - Inserting or removing inserts or fillings for holes in sleepers

• US Classifications

  • 238 - Railways: surface track