3574978

Information

• Patent Grant
• 3574978

• References
• Source

• Patent Number

  3,574,978

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1971
  53 years ago

• CPC

  • B24B9/085 - for watch glasses
  • B24B45/00 - Means for securing grinding wheels on rotary arbors

• US Classifications

  • 451 - Abrading