1722690

Information

• Patent Grant
• 1722690

• References
• Source

• Patent Number

  1,722,690

• Date Filed

  Not available

• Date Issued

  Tuesday, July 30, 1929
  95 years ago

• CPC

  • G07D5/06 - Testing the hardness or elasticity
  • G07D5/02 - Testing the dimensions

• US Classifications

  • 194 - Check-actuated control mechanisms