3020680

Information

• Patent Grant
• 3020680

• References
• Source

• Patent Number

  3,020,680

• Date Filed

  Not available

• Date Issued

  Tuesday, February 13, 1962
  62 years ago

• CPC

  • H03H3/02 - for the manufacture of piezo-electric or electrostrictive resonators or networks
  • B24B11/00 - Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work Accessories therefor
  • Y10S451/913 - Contour abrading

• US Classifications

  • 451 - Abrading
  • D15 - Machines not elsewhere specified