1387697

Information

• Patent Grant
• 1387697

• References
• Source

• Patent Number

  1,387,697

• Date Filed

  Not available

• Date Issued

  Tuesday, August 16, 1921
  103 years ago

• CPC

  • B24B15/08 - for grinding co-operating seat surfaces by moving one over the other
  • Y10T74/19195 - Progressive

• US Classifications

  • 074 - Machine element or mechanism