3618271

Information

• Patent Grant
• 3618271

• References
• Source

• Patent Number

  3,618,271

• Date Filed

  Not available

• Date Issued

  Tuesday, November 9, 1971
  53 years ago

• CPC

  • B24B13/005 - Blocking means, chucks or the like Alignment devices
  • B24B13/0012 - for multifocal lenses

• US Classifications

  • 451 - Abrading
  • 065 - Glass manufacturing