1804879

Information

• Patent Grant
• 1804879

• References
• Source

• Patent Number

  1,804,879

• Date Filed

  Not available

• Date Issued

  Tuesday, May 12, 1931
  93 years ago

• CPC

  • B21B1/082 - Piling sections having lateral edges specially adapted for interlocking with each other in order to build a wall
  • B21B39/16 - immediately before entering or after leaving the pass

• US Classifications

  • 072 - Metal deforming