2120353

Information

• Patent Grant
• 2120353

• References
• Source

• Patent Number

  2,120,353

• Date Filed

  Not available

• Date Issued

  Tuesday, June 14, 1938
  86 years ago

• CPC

  • G04C11/005 - by changing the ratio of the driving-gear

• US Classifications

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