1666179

Information

• Patent Grant
• 1666179

• References
• Source

• Patent Number

  1,666,179

• Date Filed

  Not available

• Date Issued

  Tuesday, April 17, 1928
  96 years ago

• CPC

  • G01L7/106 - with optical transmitting or indicating means

• US Classifications

  • 073 - Measuring and testing