1974141

Information

• Patent Grant
• 1974141

• References
• Source

• Patent Number

  1,974,141

• Date Filed

  Not available

• Date Issued

  Tuesday, September 18, 1934
  90 years ago

• CPC

  • E01B31/13 - by milling
  • Y10T409/306496 - with work follower

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 451 - Abrading