1887504

Information

• Patent Grant
• 1887504

• References
• Source

• Patent Number

  1,887,504

• Date Filed

  Not available

• Date Issued

  Tuesday, November 15, 1932
  92 years ago

• CPC

  • C23C8/26 - of ferrous surfaces
  • Y10S76/02 - Case hardening
  • Y10S76/08 - Razor blade manufacturing

• US Classifications

  • 148 - Metal treatment
  • 076 - Metal tools and implements, making
  • 266 - Metallurgical apparatus