2269639

Information

• Patent Grant
• 2269639

• References
• Source

• Patent Number

  2,269,639

• Date Filed

  Not available

• Date Issued

  Tuesday, January 13, 1942
  82 years ago

• CPC

  • H04Q1/34 - Impulse regenerators with mechanical or other non-electrical marking arrangements

• US Classifications

  • 379 - Telephonic communications