1903343

Information

• Patent Grant
• 1903343

• References
• Source

• Patent Number

  1,903,343

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1933
  91 years ago

• CPC

  • B24B33/088 - for holes having a shape other than cylindrical

• US Classifications

  • 451 - Abrading