3874297

Information

• Patent Grant
• 3874297

• References
• Source

• Patent Number

  3,874,297

• Date Filed

  Not available

• Date Issued

  Tuesday, April 1, 1975
  50 years ago

• CPC

  • B66B21/025 - of variable speed type

• US Classifications

  • 104 - Railways
  • 198 - Conveyors: power-driven