3921339

Information

• Patent Grant
• 3921339

• References
• Source

• Patent Number

  3,921,339

• Date Filed

  Not available

• Date Issued

  Tuesday, November 25, 1975
  49 years ago

• CPC

  • B24B19/09 - for grinding trochoidal surfaces
  • B23Q27/006 - by rolling without slippage two bodies of particular shape relative to each other
  • Y10S451/919 - Wankel

• US Classifications

  • 451 - Abrading