2772940

Information

• Patent Grant
• 2772940

• References
• Source

• Patent Number

  2,772,940

• Date Filed

  Not available

• Date Issued

  Tuesday, December 4, 1956
  68 years ago

• CPC

  • G08B9/04 - Means for recording operation of the apparatus

• US Classifications

  • 346 - Recorders