1970778

Information

• Patent Grant
• 1970778

• References
• Source

• Patent Number

  1,970,778

• Date Filed

  Not available

• Date Issued

  Tuesday, August 21, 1934
  90 years ago

• CPC

  • H01B13/245 - of metal layers
  • B21C25/06 - Press heads, dies, or mandrels for coating work

• US Classifications

  • 072 - Metal deforming