3901020

Information

• Patent Grant
• 3901020

• References
• Source

• Patent Number

  3,901,020

• Date Filed

  Not available

• Date Issued

  Tuesday, August 26, 1975
  49 years ago

• CPC

  • G04F7/0814 - with double hammer
  • G04F7/06 - running only during the time interval to be measured
  • G04F7/0852 - with member having a rotational two-way movement

• US Classifications

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