3004372

Information

• Patent Grant
• 3004372

• References
• Source

• Patent Number

  3,004,372

• Date Filed

  Not available

• Date Issued

  Tuesday, October 17, 1961
  63 years ago

• CPC

  • B24B13/0012 - for multifocal lenses

• US Classifications

  • 451 - Abrading