2447803

Information

• Patent Grant
• 2447803

• References
• Source

• Patent Number

  2,447,803

• Date Filed

  Not available

• Date Issued

  Tuesday, August 24, 1948
  76 years ago

• CPC

  • G07C1/04 - wherein the time is indicated in figures
  • H03M1/00 - Analogue/digital conversion Digital/analogue conversion

• US Classifications

  • 346 - Recorders