3649236

Information

• Patent Grant
• 3649236

• References
• Source

• Patent Number

  3,649,236

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1972
  52 years ago

• CPC

  • C03B23/22 - Uniting glass lenses
  • B29D11/00028 - Bifocal lenses; Multifocal lenses
  • Y10S425/808 - Lens mold

• US Classifications

  • 065 - Glass manufacturing
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 351 - Optics: eye examining, vision testing and correcting
  • 425 - Plastic article or earthenware shaping or treating: apparatus