1697083

Information

• Patent Grant
• 1697083

• References
• Source

• Patent Number

  1,697,083

• Date Filed

  Not available

• Date Issued

  Tuesday, January 1, 1929
  96 years ago

• CPC

  • C23C8/00 - Solid state diffusion of only non-metal elements into metallic material surfaces Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating
  • C22C38/12 - containing tungsten, tantalum, molybdenum, vanadium, or niobium
  • F01L3/08 - Valves guides Sealing of valve stem
  • Y10S76/02 - Case hardening
  • Y10T407/27 - comprising tool of specific chemical composition

• US Classifications

  • 148 - Metal treatment
  • 076 - Metal tools and implements, making
  • 123 - Internal-combustion engines
  • 251 - Valves and valve actuation
  • 407 - Cutters, for shaping
  • 420 - Alloys or metallic compositions