2257713

Information

• Patent Grant
• 2257713

• References
• Source

• Patent Number

  2,257,713

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1941
  83 years ago

• CPC

  • B22D18/06 - Vacuum casting
  • Y10S164/07 - Melt

• US Classifications

  • 164 - Metal founding