417472

Information

• Patent Grant
• 417472

• References
• Source

• Patent Number

  417,472

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1889
  135 years ago

• CPC

  • F02P21/02 - the flames being kept burning essentially external to engine working chambers

• US Classifications

  • 123 - Internal-combustion engines