2172545

Information

• Patent Grant
• 2172545

• References
• Source

• Patent Number

  2,172,545

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1939
  85 years ago

• CPC

  • B23F21/284 - in exchangeable arrangement
  • Y10T74/19963 - Spur

• US Classifications

  • 076 - Metal tools and implements, making
  • 074 - Machine element or mechanism