2903881

Information

• Patent Grant
• 2903881

• References
• Source

• Patent Number

  2,903,881

• Date Filed

  Not available

• Date Issued

  Tuesday, September 15, 1959
  65 years ago

• CPC

  • G04D7/1221 - with recording

• US Classifications

  • 073 - Measuring and testing
  • 324 - Electricity: measuring and testing
  • 968 - Horology