2857640

Information

• Patent Grant
• 2857640

• References
• Source

• Patent Number

  2,857,640

• Date Filed

  Not available

• Date Issued

  Tuesday, October 28, 1958
  66 years ago

• CPC

  • B22C21/10 - Guiding equipment
  • B22C21/02 - Sectional flasks

• US Classifications

  • 164 - Metal founding