1553829

Information

• Patent Grant
• 1553829

• References
• Source

• Patent Number

  1,553,829

• Date Filed

  Not available

• Date Issued

  Tuesday, September 15, 1925
  99 years ago

• CPC

  • F02P3/0421 - with electronic tubes
  • F02P3/0435 - with semiconductor devices

• US Classifications

  • 123 - Internal-combustion engines