3807167

Information

• Patent Grant
• 3807167

• References
• Source

• Patent Number

  3,807,167

• Date Filed

  Not available

• Date Issued

  Tuesday, April 30, 1974
  51 years ago

• CPC

  • G04B19/21 - Drums
  • G04C17/0075 - by drums or drum-like devices

• US Classifications

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