2724631

Information

• Patent Grant
• 2724631

• References
• Source

• Patent Number

  2,724,631

• Date Filed

  Not available

• Date Issued

  Tuesday, November 22, 1955
  69 years ago

• CPC

  • G01D9/36 - in separate columns

• US Classifications

  • 346 - Recorders
  • D10 - Measuring, testing, or signalling instruments