3768992

Information

• Patent Grant
• 3768992

• References
• Source

• Patent Number

  3,768,992

• Date Filed

  Not available

• Date Issued

  Tuesday, October 30, 1973
  51 years ago

• CPC

  • C03B27/03 - the liquid being a molten metal or a molten salt

• US Classifications

  • 065 - Glass manufacturing
  • 351 - Optics: eye examining, vision testing and correcting