1895439

Information

• Patent Grant
• 1895439

• References
• Source

• Patent Number

  1,895,439

• Date Filed

  Not available

• Date Issued

  Tuesday, January 31, 1933
  91 years ago

• CPC

  • C23C8/04 - Treatment of selected surface areas
  • Y10S76/02 - Case hardening

• US Classifications

  • 148 - Metal treatment
  • 076 - Metal tools and implements, making