1539905

Information

• Patent Grant
• 1539905

• References
• Source

• Patent Number

  1,539,905

• Date Filed

  Not available

• Date Issued

  Tuesday, June 2, 1925
  99 years ago

• CPC

  • B22D17/14 - Machines with evacuated die cavity
  • Y10S164/09 - Piston-vacuum

• US Classifications

  • 164 - Metal founding