2639148

Information

• Patent Grant
• 2639148

• References
• Source

• Patent Number

  2,639,148

• Date Filed

  Not available

• Date Issued

  Tuesday, May 19, 1953
  71 years ago

• CPC

  • G07B5/06 - for preventing fraudulent operation

• US Classifications

  • 226 - Advancing material of indeterminate length
  • 178 - Telegraphy