3851385

Information

• Patent Grant
• 3851385

• References
• Source

• Patent Number

  3,851,385

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1974
  50 years ago

• CPC

  • G04D3/0038 - for balances
  • G04C3/107 - Controlling frequency or amplitude of the oscillating system
  • Y10T29/42 - Piezoelectric device making
  • Y10T29/49004 - including measuring or testing of device or component part
  • Y10T29/49009 - Dynamoelectric machine
  • Y10T29/4957 - Sound device making

• US Classifications

  • 029 - Metal working
  • 084 - Music
  • 368 - Horology: time measuring systems or devices
  • 968 - Horology