1902392

Information

• Patent Grant
• 1902392

• References
• Source

• Patent Number

  1,902,392

• Date Filed

  Not available

• Date Issued

  Tuesday, March 21, 1933
  91 years ago

• CPC

  • E05F1/008 - by time control
  • Y10T74/118 - Winding knob trip [e.g., alarm mechanism]
  • Y10T292/1021 - Motor

• US Classifications

  • 049 - Movable or removable closures
  • 074 - Machine element or mechanism
  • 292 - Closure fasteners