802421

Information

• Patent Grant
• 802421

• References
• Source

• Patent Number

  802,421

• Date Filed

  Not available

• Date Issued

  Tuesday, October 24, 1905
  118 years ago

• CPC

  • H01C8/02 - Coherers or like imperfect resistors for detecting electromagnetic waves

• US Classifications

  • 178 - Telegraphy