2142305

Information

• Patent Grant
• 2142305

• References
• Source

• Patent Number

  2,142,305

• Date Filed

  Not available

• Date Issued

  Tuesday, January 3, 1939
  86 years ago

• CPC

  • E04B1/6137 - the connection made by formlocking
  • E04B1/6125 - with protrusions on the one frontal surface co-operating with recesses in the other frontal surface
  • E04B1/6129 - the connection made by expansion
  • E04B1/6133 - the connection made by friction-grip
  • E04B1/6141 - the connection made by an additional locking key
  • E04B1/6158 - the connection made by formlocking
  • E04B1/6179 - with protrusions and recesses on each frontal surface
  • E04B9/28 - with the slabs, panels, sheets or the like having grooves engaging with horizontal flanges of the supporting construction or accessory means connected thereto
  • E04C2/043 - of plaster
  • E04C2/384 - with a metal frame

• US Classifications

  • 052 - Static structures
  • 446 - Amusement devices: toys