1777423

Information

• Patent Grant
• 1777423

• References
• Source

• Patent Number

  1,777,423

• Date Filed

  Not available

• Date Issued

  Tuesday, October 7, 1930
  94 years ago

• CPC

  • G01N3/56 - Investigating resistance to wear or abrasion
  • Y10S29/068 - Hollow spindle contains

• US Classifications

  • 073 - Measuring and testing
  • 029 - Metal working