1687725

Information

• Patent Grant
• 1687725

• References
• Source

• Patent Number

  1,687,725

• Date Filed

  Not available

• Date Issued

  Tuesday, October 16, 1928
  96 years ago

• CPC

  • B24B3/20 - Tapering or chamfering taps or reamers

• US Classifications

  • 451 - Abrading