1803999

Information

• Patent Grant
• 1803999

• References
• Source

• Patent Number

  1,803,999

• Date Filed

  Not available

• Date Issued

  Tuesday, May 5, 1931
  93 years ago

• CPC

  • C04B33/16 - Lean materials

• US Classifications

  • 501 - Compositions: ceramic
  • 209 - Classifying, separating, and assorting solids
  • 252 - Compositions