2823491

Information

• Patent Grant
• 2823491

• References
• Source

• Patent Number

  2,823,491

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1958
  66 years ago

• CPC

  • G02B5/3083 - Birefringent or phase retarding elements
  • C03B25/025 - Glass sheets
  • C03B27/052 - for flat or bent glass sheets being in a vertical position
  • C03B27/056 - supported on the lower edge
  • C03B32/00 - Thermal after-treatment of glass products not provided for in groups C03B19/00 , C03B25/00 - C03B31/00 or C03B37/00
  • C03B35/20 - by gripping tongs or supporting frames

• US Classifications

  • 065 - Glass manufacturing
  • 359 - Optical: systems and elements