1778977

Information

• Patent Grant
• 1778977

• References
• Source

• Patent Number

  1,778,977

• Date Filed

  Not available

• Date Issued

  Tuesday, October 21, 1930
  94 years ago

• CPC

  • B24B17/023 - using two or more templates
  • Y10T409/30084 - with regulation of operation by templet, card, or other replaceable information supply

• US Classifications

  • 451 - Abrading
  • 409 - Gear cutting, milling, or planing