1857254

Information

• Patent Grant
• 1857254

• References
• Source

• Patent Number

  1,857,254

• Date Filed

  Not available

• Date Issued

  Tuesday, May 10, 1932
  92 years ago

• CPC

  • B24B7/165 - end faces of piston rings
  • Y10S451/914 - Supporting, positioning, or feeding work
  • Y10T29/49282 - including grinding or honing

• US Classifications

  • 451 - Abrading
  • 029 - Metal working