2425457

Information

• Patent Grant
• 2425457

• References
• Source

• Patent Number

  2,425,457

• Date Filed

  Not available

• Date Issued

  Tuesday, August 12, 1947
  78 years ago

• CPC

  • H04L15/08 - with a single key which transmits dots in one position and dashes in a second position
  • Y10T307/872 - Repetitive make and break

• US Classifications

  • 178 - Telegraphy
  • 307 - Electrical transmission or interconnection systems