784393

Information

• Patent Grant
• 784393

• References
• Source

• Patent Number

  784,393

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1905
  120 years ago

• CPC

  • G01H1/003 - of rotating machines
  • H04L15/12 - with keyboard co-operating with code-bars

• US Classifications

  • 341 - Coded data generation or conversion
  • 307 - Electrical transmission or interconnection systems
  • 340 - Communications: electrical