1273904

Information

• Patent Grant
• 1273904

• References
• Source

• Patent Number

  1,273,904

• Date Filed

  Not available

• Date Issued

  Tuesday, July 30, 1918
  106 years ago

• CPC

  • B23C3/32 - Milling helical grooves
  • B24B19/024 - on electrical resistances
  • Y10T409/300448 - with means to advance work or product

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 076 - Metal tools and implements, making
  • 144 - Woodworking