3875739

Information

• Patent Grant
• 3875739

• References
• Source

• Patent Number

  3,875,739

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1975
  49 years ago

• CPC

  • G04B19/202 - by means of turning discs
  • G04B13/002 - where rotation in one direction is changed into a stepping movement
  • G04B19/25386 - manually corrected at the end of months having less than 31 days

• US Classifications

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