Title:
Method of changing the bulk density of powdered materials
United States Patent 2896263
Inventors:
Frederick, Edward R.
Bartholomew, George A.
Publication Date:
07/28/1959
Other Classes:
23/313R, 264/117, 264/DIG.45, 361/212, 361/213, 419/30, 419/62, 425/174, 425/174.8E, 428/357
International Classes:
B01J2/00; B01J2/00