1149428

Information

• Patent Grant
• 1149428

• References
• Source

• Patent Number

  1,149,428

• Date Filed

  Not available

• Date Issued

  Tuesday, August 10, 1915
  109 years ago

• CPC

  • H04L15/00 - Apparatus or local circuits for transmitting or receiving dot-and-dash codes
  • G09C1/12 - comprising contact-bearing permutation discs
  • H01H2300/018 - Application transfer between utility and emergency power supply

• US Classifications

  • 380 - Cryptography