1748378

Information

• Patent Grant
• 1748378

• References
• Source

• Patent Number

  1,748,378

• Date Filed

  Not available

• Date Issued

  Tuesday, February 25, 1930
  95 years ago

• CPC

  • C23C8/26 - of ferrous surfaces
  • Y10S76/02 - Case hardening

• US Classifications

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