1278857

Information

• Patent Grant
• 1278857

• References
• Source

• Patent Number

  1,278,857

• Date Filed

  Not available

• Date Issued

  Tuesday, September 17, 1918
  106 years ago

• CPC

  • B21H1/12 - rings for ball or roller bearings
  • B26F1/0015 - specially adapted for perforating tubes
  • Y10T82/16852 - with supplemental nonrotative tool

• US Classifications

  • 082 - Turning