1768100

Information

• Patent Grant
• 1768100

• References
• Source

• Patent Number

  1,768,100

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1930
  94 years ago

• CPC

  • G04B45/046 - the driving mechanism of the hands being invisible because of special shielding

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 968 - Horology
  • D10 - Measuring, testing, or signalling instruments