3507110

Information

• Patent Grant
• 3507110

• References
• Source

• Patent Number

  3,507,110

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1970
  54 years ago

• CPC

  • G04C21/14 - Electro-acoustic time announcement

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 968 - Horology