2253170

Information

• Patent Grant
• 2253170

• References
• Source

• Patent Number

  2,253,170

• Date Filed

  Not available

• Date Issued

  Tuesday, August 19, 1941
  83 years ago

• CPC

  • E05F17/004 - for wings which abut when closed
  • E05F15/622 - using screw-and-nut mechanisms
  • E05Y2201/474 - Compression springs
  • E05Y2400/332 - Switches
  • E05Y2400/552 - Switches
  • E05Y2800/21 - of identical elements
  • E05Y2900/132 - Doors

• US Classifications

  • 318 - Electricity: motive power systems
  • 049 - Movable or removable closures
  • 310 - Electrical generator or motor structure