1699273

Information

• Patent Grant
• 1699273

• References
• Source

• Patent Number

  1,699,273

• Date Filed

  Not available

• Date Issued

  Tuesday, January 15, 1929
  96 years ago

• CPC

  • F01L3/02 - Selecting particular materials for valve-members or valve-seats Valve-members or valve-seats composed of two or more materials
  • Y10S76/02 - Case hardening
  • Y10S122/13 - Tubes - composition and protection
  • Y10T29/49307 - Composite or hollow valve stem or head making

• US Classifications

  • 148 - Metal treatment
  • 029 - Metal working
  • 076 - Metal tools and implements, making
  • 122 - Liquid heaters and vaporizers
  • 123 - Internal-combustion engines
  • 420 - Alloys or metallic compositions