2691698

Information

• Patent Grant
• 2691698

• References
• Source

• Patent Number

  2,691,698

• Date Filed

  Not available

• Date Issued

  Tuesday, October 12, 1954
  70 years ago

• CPC

  • H01B7/328 - comprising violation sensing means

• US Classifications

  • 380 - Cryptography
  • 174 - Electricity: conductors and insulators
  • 340 - Communications: electrical
  • 361 - Electricity: electrical systems and devices
  • 379 - Telephonic communications
  • 713 - Electrical computers and digital processing systems: support