1850247

Information

• Patent Grant
• 1850247

• References
• Source

• Patent Number

  1,850,247

• Date Filed

  Not available

• Date Issued

  Tuesday, March 22, 1932
  93 years ago

• CPC

  • G04B39/025 - without special sealing parts
  • G04B37/144 - Fixation on flat support

• US Classifications

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