3680538

Information

• Patent Grant
• 3680538

• References
• Source

• Patent Number

  3,680,538

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1972
  52 years ago

• CPC

  • H01T13/18 - Means for heating

• US Classifications

  • 123 - Internal-combustion engines
  • 313 - Electric lamp and discharge devices