2248774

Information

• Patent Grant
• 2248774

• References
• Source

• Patent Number

  2,248,774

• Date Filed

  Not available

• Date Issued

  Tuesday, July 8, 1941
  83 years ago

• CPC

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

• US Classifications

  • 375 - Pulse or digital communications
  • 123 - Internal-combustion engines
  • 379 - Telephonic communications