3850691

Information

• Patent Grant
• 3850691

• References
• Source

• Patent Number

  3,850,691

• Date Filed

  Not available

• Date Issued

  Tuesday, November 26, 1974
  50 years ago

• CPC

  • B61C15/10 - by depositing sand or like friction increasing materials
  • E01H8/105 - Pneumatically or hydraulically loosening, removing or dislodging undesirable matter

• US Classifications

  • 134 - Cleaning and liquid contact with solids
  • 104 - Railways
  • 118 - Coating apparatus
  • 291 - Track sanders
  • 427 - Coating processes
  • 451 - Abrading