3690628

Information

• Patent Grant
• 3690628

• References
• Source

• Patent Number

  3,690,628

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1972
  52 years ago

• CPC

  • C04B20/06 - Expanding clay, perlite, vermiculite or like granular materials
  • C04B20/061 - in rotary kilns
  • F27B7/14 - with means for agitating or moving the charge

• US Classifications

  • 432 - Heating
  • 252 - Compositions