1835831

Information

• Patent Grant
• 1835831

• References
• Source

• Patent Number

  1,835,831

• Date Filed

  Not available

• Date Issued

  Tuesday, December 8, 1931
  93 years ago

• CPC

  • G04B37/0041 - the cover or the bottom can slide or turn with a spring action

• US Classifications

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