1901690

Information

• Patent Grant
• 1901690

• References
• Source

• Patent Number

  1,901,690

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1933
  91 years ago

• CPC

  • B24B5/065 - for brake drums

• US Classifications

  • 451 - Abrading
  • 125 - Stone working
  • 188 - Brakes
  • 409 - Gear cutting, milling, or planing