2223639

Information

• Patent Grant
• 2223639

• References
• Source

• Patent Number

  2,223,639

• Date Filed

  Not available

• Date Issued

  Tuesday, December 3, 1940
  83 years ago

• CPC

  • B65G23/20 - Screws
  • Y10T74/18152 - Belt or chain carried member
  • Y10T74/18312 - Grooved

• US Classifications

  • 198 - Conveyors: power-driven
  • 074 - Machine element or mechanism