1659969

Information

• Patent Grant
• 1659969

• References
• Source

• Patent Number

  1,659,969

• Date Filed

  Not available

• Date Issued

  Tuesday, February 21, 1928
  96 years ago

• CPC

  • G01B5/22 - Spherometers

• US Classifications

  • 033 - Geometrical instruments
  • D10 - Measuring, testing, or signalling instruments