2278477

Information

• Patent Grant
• 2278477

• References
• Source

• Patent Number

  2,278,477

• Date Filed

  Not available

• Date Issued

  Tuesday, April 7, 1942
  82 years ago

• CPC

  • B21D13/04 - by rolling
  • B31F1/305 - with sets of interengaging tools each secured to endless chains

• US Classifications

  • 072 - Metal deforming