2299913

Information

• Patent Grant
• 2299913

• References
• Source

• Patent Number

  2,299,913

• Date Filed

  Not available

• Date Issued

  Tuesday, October 27, 1942
  82 years ago

• CPC

  • G04B19/228 - with linear time graduation

• US Classifications

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