421765

Information

• Patent Grant
• 421765

• References
• Source

• Patent Number

  421,765

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1890
  135 years ago

• CPC

  • B26D7/016 - Back gauges
  • Y10T83/4536 - Work carriage carries ratchet means to determine increments
  • Y10T83/4647 - One-revolution clutch in tool drive

• US Classifications

  • 083 - Cutting
  • 400 - Typewriting machines