1784648

Information

• Patent Grant
• 1784648

• References
• Source

• Patent Number

  1,784,648

• Date Filed

  Not available

• Date Issued

  Tuesday, December 9, 1930
  94 years ago

• CPC

  • B24B37/022 - characterised by the movement of the work between two lapping plates

• US Classifications

  • 451 - Abrading