2021133

Information

• Patent Grant
• 2021133

• References
• Source

• Patent Number

  2,021,133

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1935
  89 years ago

• CPC

  • E04B2/16 - using elements having specially-designed means for stabilising the position
  • E04B2002/0208 - of trapezoidal shape
  • E04B2002/0258 - Gripping or handling aids

• US Classifications

  • 052 - Static structures