1993933

Information

• Patent Grant
• 1993933

• References
• Source

• Patent Number

  1,993,933

• Date Filed

  Not available

• Date Issued

  Tuesday, March 12, 1935
  90 years ago

• CPC

  • E01B31/15 - by planing or filing
  • Y10T409/502624 - Means for cutting groove

• US Classifications

  • 409 - Gear cutting, milling, or planing