1440438

Information

• Patent Grant
• 1440438

• References
• Source

• Patent Number

  1,440,438

• Date Filed

  Not available

• Date Issued

  Tuesday, January 2, 1923
  102 years ago

• CPC

  • H01H21/48 - incorporating a ratchet mechanism
  • Y10T74/20924 - Controller checks

• US Classifications

  • 074 - Machine element or mechanism