1638789

Information

• Patent Grant
• 1638789

• References
• Source

• Patent Number

  1,638,789

• Date Filed

  Not available

• Date Issued

  Tuesday, August 9, 1927
  97 years ago

• CPC

  • B23D37/04 - for broaching inner surfaces
  • Y10T29/53909 - Means comprising hand manipulatable tool
  • Y10T409/405775 - with means to hold work during cutting

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 029 - Metal working