1771840

Information

• Patent Grant
• 1771840

• References
• Source

• Patent Number

  1,771,840

• Date Filed

  Not available

• Date Issued

  Tuesday, July 29, 1930
  94 years ago

• CPC

  • B23D63/164 - with tools that remain stationarily positioned during sharpening
  • B24B3/14 - of mortise chain cutters

• US Classifications

  • 451 - Abrading
  • 076 - Metal tools and implements, making