1392770

Information

• Patent Grant
• 1392770

• References
• Source

• Patent Number

  1,392,770

• Date Filed

  Not available

• Date Issued

  Tuesday, October 4, 1921
  103 years ago

• CPC

  • B23D37/04 - for broaching inner surfaces
  • Y10T409/400875 - with means to select cutter or to select or modify cutter drive
  • Y10T409/407175 - Rack means

• US Classifications

  • 409 - Gear cutting, milling, or planing