3871277

Information

• Patent Grant
• 3871277

• References
• Source

• Patent Number

  3,871,277

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1975
  49 years ago

• CPC

  • E02F9/04 - Walking gears moving the dredger forward step-by-step
  • B61B13/00 - Other railway systems
  • E21C29/02 - by means on the machine exerting a thrust against fixed supports

• US Classifications

  • 105 - Railway rolling stock
  • 104 - Railways
  • 173 - Tool driving or impacting
  • 254 - Implements or apparatus for applying pushing or pulling force