1504132

Information

• Patent Grant
• 1504132

• References
• Source

• Patent Number

  1,504,132

• Date Filed

  Not available

• Date Issued

  Tuesday, August 5, 1924
  100 years ago

• CPC

  • E01B7/02 - Tongues Associated constructions
  • E01B2202/042 - Sliding
  • E01B2202/06 - Use of friction-reducing surfaces

• US Classifications

  • 246 - Railway switches and signals