3890857

Information

• Patent Grant
• 3890857

• References
• Source

• Patent Number

  3,890,857

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1975
  50 years ago

• CPC

  • B23D63/164 - with tools that remain stationarily positioned during sharpening

• US Classifications

  • 076 - Metal tools and implements, making