1639620

Information

• Patent Grant
• 1639620

• References
• Source

• Patent Number

  1,639,620

• Date Filed

  Not available

• Date Issued

  Tuesday, August 16, 1927
  97 years ago

• CPC

  • E01B11/56 - Special arrangements for supporting rail ends
  • E01B11/62 - Bridge chairs

• US Classifications

  • 238 - Railways: surface track
  • 267 - Spring devices