2157050

Information

• Patent Grant
• 2157050

• References
• Source

• Patent Number

  2,157,050

• Date Filed

  Not available

• Date Issued

  Tuesday, May 2, 1939
  86 years ago

• CPC

  • B21F3/08 - to flat spiral
  • B21F3/04 - externally on a mandrel or the like
  • Y10T29/49082 - Resistor making
  • Y10T29/49083 - Heater type
  • Y10T29/49863 - with prestressing of part

• US Classifications

  • 029 - Metal working