2148940

Information

• Patent Grant
• 2148940

• References
• Source

• Patent Number

  2,148,940

• Date Filed

  Not available

• Date Issued

  Tuesday, February 28, 1939
  85 years ago

• CPC

  • E01B7/12 - Fixed frogs made of one part or composite

• US Classifications

  • 246 - Railway switches and signals