3812331

Information

• Patent Grant
• 3812331

• References
• Source

• Patent Number

  3,812,331

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1974
  50 years ago

• CPC

  • G01P1/04 - Special adaptations of driving means
  • G06M1/062 - for drum type indicating means

• US Classifications

  • 235 - Registers
  • 324 - Electricity: measuring and testing