442681

Information

• Patent Grant
• 442681

• References
• Source

• Patent Number

  442,681

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1890
  134 years ago

• CPC

  • B21G1/12 - Securing, cleaning-off burrs, reconditioning polishing, grinding
  • B23Q1/44 - using particular mechanisms
  • Y10T409/30532 - with means to advance work or product
  • Y10T409/305992 - with means to effect stopping upon completion of operation

• US Classifications

  • 409 - Gear cutting, milling, or planing