3923948

Information

• Patent Grant
• 3923948

• References
• Source

• Patent Number

  3,923,948

• Date Filed

  Not available

• Date Issued

  Tuesday, December 2, 1975
  49 years ago

• CPC

  • B29C51/42 - Heating or cooling
  • B29C51/00 - Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating
  • B29K2025/00 - Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
  • B29K2105/04 - cellular or porous
  • B29L2031/7168 - Egg-cartons

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes