United States Patent 2973254
Inventors:
Schmidt, Lawrence D.
Publication Date:
02/28/1961
Other Classes:
44/607, 252/70, 44/541
International Classes:
B65G69/20; C10L9/10; B65G69/00; C10L9/00
US Patent References:
| 2448605 | Composition for treating coal and the like | | | |
| 2590205 | Method of storing and recovering peat | | | |