1720316

Information

• Patent Grant
• 1720316

• References
• Source

• Patent Number

  1,720,316

• Date Filed

  Not available

• Date Issued

  Tuesday, July 9, 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
  • Y10S164/13 - Valve
  • Y10T29/49307 - Composite or hollow valve stem or head making

• US Classifications

  • 123 - Internal-combustion engines
  • 029 - Metal working
  • 164 - Metal founding
  • 242 - Winding, tensioning, or guiding