2001633

Information

• Patent Grant
• 2001633

• References
• Source

• Patent Number

  2,001,633

• Date Filed

  Not available

• Date Issued

  Tuesday, May 14, 1935
  89 years ago

• CPC

  • G04B19/228 - with linear time graduation

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 434 - Education and demonstration
  • 968 - Horology