2450374

Information

• Patent Grant
• 2450374

• References
• Source

• Patent Number

  2,450,374

• Date Filed

  Not available

• Date Issued

  Tuesday, September 28, 1948
  76 years ago

• CPC

  • E21D15/43 - Details of wedges
  • E21D15/285 - by means of wedges or wedge combinations
  • E21D15/581 - in which the props are pre- loaded

• US Classifications

  • 248 - Supports