3229037

Information

• Patent Grant
• 3229037

• References
• Source

• Patent Number

  3,229,037

• Date Filed

  Not available

• Date Issued

  Tuesday, January 11, 1966
  59 years ago

• CPC

  • G09C1/10 - the connections being electrical

• US Classifications

  • 380 - Cryptography
  • 178 - Telegraphy