3639507

Information

• Patent Grant
• 3639507

• References
• Source

• Patent Number

  3,639,507

• Date Filed

  Not available

• Date Issued

  Tuesday, February 1, 1972
  53 years ago

• CPC

  • B22C7/02 - Lost patterns
  • B29C33/40 - Plastics
  • B29C33/52 - soluble or fusible
  • B29K2825/00 - Use of polymers of vinyl-aromatic compounds or derivatives thereof as mould material
  • B29K2909/02 - Ceramics

• US Classifications

  • 525 - Synthetic resins or natural rubbers
  • 164 - Metal founding