1389536

Information

• Patent Grant
• 1389536

• References
• Source

• Patent Number

  1,389,536

• Date Filed

  Not available

• Date Issued

  Tuesday, August 30, 1921
  103 years ago

• CPC

  • F01L7/14 - Multiple-valve arrangements
  • F01L7/08 - with conically or frusto-conically shaped valves

• US Classifications

  • 123 - Internal-combustion engines