United States Patent 3067986
Inventors:
Grantham, Frederick W.
Publication Date:
12/11/1962
Assignee:
Joann, Grantham
Other Classes:
220/264, 34/88, 49/254, 34/603, 366/219, 366/144, 49/246
International Classes:
D06F58/02; D06F58/04
US Patent References:
| 2722408 | Means for mounting rotatable mixing drums | | | |
| 2837321 | Portable cement mixing device | | | |
| 2880977 | Dump truck for concrete and other semi-liquid materials | | | |