3889187

Information

• Patent Grant
• 3889187

• References
• Source

• Patent Number

  3,889,187

• Date Filed

  Not available

• Date Issued

  Tuesday, June 10, 1975
  49 years ago

• CPC

  • G01R1/08 - Pointers Scales Scale illumination

• US Classifications

  • 324 - Electricity: measuring and testing
  • 116 - Signals and indicators
  • 359 - Optical: systems and elements