3124664

Information

• Patent Grant
• 3124664

• References
• Source

• Patent Number

  3,124,664

• Date Filed

  Not available

• Date Issued

  Tuesday, March 10, 1964
  61 years ago

• CPC

  • H04M1/667 - Preventing unauthorised calls from a telephone set
  • Y10S70/72 - Telephone lock

• US Classifications

  • 379 - Telephonic communications
  • 070 - Locks