3857203

Information

• Patent Grant
• 3857203

• References
• Source

• Patent Number

  3,857,203

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1974
  49 years ago

• CPC

  • B24B19/09 - for grinding trochoidal surfaces
  • Y10S451/919 - Wankel

• US Classifications

  • 451 - Abrading