United States Patent 2949972
Inventors:
Benjamin, Wirkkala
Publication Date:
08/23/1960
Assignee:
Benjamin, Wirkkala
Other Classes:
180/11, 180/342, 180/904, 180/14.700
International Classes:
B64F1/22; B64F1/00
US Patent References:
| 2815875 | Dolly for handling small boats or the like | | | |