1978389

Information

• Patent Grant
• 1978389

• References
• Source

• Patent Number

  1,978,389

• Date Filed

  Not available

• Date Issued

  Tuesday, October 23, 1934
  90 years ago

• CPC

  • B23Q35/18 - involving fluid means
  • B23Q2735/085 - in a milling machine
  • Y10T409/302184 - including cutter and tracer fixed to move laterally together

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 251 - Valves and valve actuation