2807922

Information

• Patent Grant
• 2807922

• References
• Source

• Patent Number

  2,807,922

• Date Filed

  Not available

• Date Issued

  Tuesday, October 1, 1957
  67 years ago

• CPC

  • B24B13/0018 - for plane optical surfaces
  • Y10S359/90 - Methods

• US Classifications

  • 451 - Abrading
  • 359 - Optical: systems and elements