1950821

Information

• Patent Grant
• 1950821

• References
• Source

• Patent Number

  1,950,821

• Date Filed

  Not available

• Date Issued

  Tuesday, March 13, 1934
  90 years ago

• CPC

  • G04C17/0016 - with date indication

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 968 - Horology